1157841520 has 40 divisors (see below), whose sum is σ = 2936709360. Its totient is φ = 421032960.

The previous prime is 1157841511. The next prime is 1157841527. The reversal of 1157841520 is 251487511.

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 (1157841527) 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, 656985 + ... + 658744.

It is an arithmetic number, because the mean of its divisors is an integer number (73417734).

Almost surely, 2^1157841520 is an apocalyptic number.

1157841520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157841520 is an abundant number, since it is smaller than the sum of its proper divisors (1778867840).

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

1157841520 is a wasteful number, since it uses less digits than its factorization.

1157841520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315753 (or 1315747 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 34.

The square root of 1157841520 is about 34027.0703999037. The cubic root of 1157841520 is about 1050.0654592599.

The spelling of 1157841520 in words is "one billion, one hundred fifty-seven million, eight hundred forty-one thousand, five hundred twenty".