1157343520 has 24 divisors (see below), whose sum is σ = 2734224444. Its totient is φ = 462937344.

The previous prime is 1157343511. The next prime is 1157343541. The reversal of 1157343520 is 253437511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1139467536 + 17875984 = 33756^2 + 4228^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3616539 + ... + 3616858.

Almost surely, 2^1157343520 is an apocalyptic number.

1157343520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157343520 is an abundant number, since it is smaller than the sum of its proper divisors (1576880924).

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

1157343520 is an equidigital number, since it uses as much as digits as its factorization.

1157343520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7233412 (or 7233404 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 1157343520 is about 34019.7519097362. The cubic root of 1157343520 is about 1049.9148895488.

The spelling of 1157343520 in words is "one billion, one hundred fifty-seven million, three hundred forty-three thousand, five hundred twenty".