1159369920 has 84 divisors (see below), whose sum is σ = 3987759360. Its totient is φ = 309164544.

The previous prime is 1159369907. The next prime is 1159369921. The reversal of 1159369920 is 299639511.

It is a happy number.

It is a super-2 number, since 2×1159369920² = 2688277222801612800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1159369921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198400 + ... + 204159.

Almost surely, 2^1159369920 is an apocalyptic number.

1159369920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1159369920 is an abundant number, since it is smaller than the sum of its proper divisors (2828389440).

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

1159369920 is a wasteful number, since it uses less digits than its factorization.

1159369920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402582 (or 402569 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 1159369920 is about 34049.5215825421. The cubic root of 1159369920 is about 1050.5272997767.

The spelling of 1159369920 in words is "one billion, one hundred fifty-nine million, three hundred sixty-nine thousand, nine hundred twenty".