1156941520 has 40 divisors (see below), whose sum is σ = 3074160384. Its totient is φ = 396665472.

The previous prime is 1156941509. The next prime is 1156941523. The reversal of 1156941520 is 251496511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156941523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032424 + ... + 1033543.

Almost surely, 2^1156941520 is an apocalyptic number.

1156941520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1156941520 is an abundant number, since it is smaller than the sum of its proper divisors (1917218864).

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

1156941520 is a wasteful number, since it uses less digits than its factorization.

1156941520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065987 (or 2065981 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 1156941520 is about 34013.8430642584. The cubic root of 1156941520 is about 1049.7933138151.

The spelling of 1156941520 in words is "one billion, one hundred fifty-six million, nine hundred forty-one thousand, five hundred twenty".