1195871040 has 672 divisors, whose sum is σ = 5281086720. Its totient is φ = 252315648.

The previous prime is 1195871021. The next prime is 1195871099. The reversal of 1195871040 is 401785911.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1195870986 and 1195871004.

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 95 ways as a sum of consecutive naturals, for example, 91990074 + ... + 91990086.

It is an arithmetic number, because the mean of its divisors is an integer number (7858760).

Almost surely, 2^1195871040 is an apocalyptic number.

1195871040 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 1195871040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2640543360).

1195871040 is an abundant number, since it is smaller than the sum of its proper divisors (4085215680).

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

1195871040 is an frugal number, since it uses more digits than its factorization.

1195871040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 1195871040 is about 34581.3683939777. The cubic root of 1195871040 is about 1061.4383700887.

The spelling of 1195871040 in words is "one billion, one hundred ninety-five million, eight hundred seventy-one thousand, forty".