1195945920 has 336 divisors, whose sum is σ = 4693066560. Its totient is φ = 276922368.

The previous prime is 1195945909. The next prime is 1195945943. The reversal of 1195945920 is 295495911.

1195945920 is a `hidden beast` number, since 1 + 1 + 9 + 59 + 4 + 592 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 635541 + ... + 637419.

It is an arithmetic number, because the mean of its divisors is an integer number (13967460).

Almost surely, 2^1195945920 is an apocalyptic number.

1195945920 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 1195945920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2346533280).

1195945920 is an abundant number, since it is smaller than the sum of its proper divisors (3497120640).

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

1195945920 is a wasteful number, since it uses less digits than its factorization.

1195945920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932 (or 1919 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 45.

The square root of 1195945920 is about 34582.4510409543. The cubic root of 1195945920 is about 1061.4605237724.

The spelling of 1195945920 in words is "one billion, one hundred ninety-five million, nine hundred forty-five thousand, nine hundred twenty".