1195983840 has 96 divisors (see below), whose sum is σ = 3772361376. Its totient is φ = 318504960.

The previous prime is 1195983839. The next prime is 1195983851. The reversal of 1195983840 is 483895911.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1195983840² = 2860754691082291200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1195983840.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552360 + ... + 554520.

It is an arithmetic number, because the mean of its divisors is an integer number (39295431).

Almost surely, 2^1195983840 is an apocalyptic number.

1195983840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1195983840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1886180688).

1195983840 is an abundant number, since it is smaller than the sum of its proper divisors (2576377536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1195983840 is a wasteful number, since it uses less digits than its factorization.

1195983840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332 (or 3324 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 1195983840 is about 34582.9992915594. Note that the first 3 decimals coincide. The cubic root of 1195983840 is about 1061.4717422724.

The spelling of 1195983840 in words is "one billion, one hundred ninety-five million, nine hundred eighty-three thousand, eight hundred forty".