1013557797 has 24 divisors (see below), whose sum is σ = 1707326400. Its totient is φ = 579174120.

The previous prime is 1013557789. The next prime is 1013557817. The reversal of 1013557797 is 7977553101.

1013557797 is a `hidden beast` number, since 1 + 0 + 1 + 3 + 557 + 7 + 97 = 666.

1013557797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1013557797 - 2³ = 1013557789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013557747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161079 + ... + 167252.

It is an arithmetic number, because the mean of its divisors is an integer number (71138600).

Almost surely, 2^1013557797 is an apocalyptic number.

It is an amenable number.

1013557797 is a deficient number, since it is larger than the sum of its proper divisors (693768603).

1013557797 is an equidigital number, since it uses as much as digits as its factorization.

1013557797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328358 (or 328341 counting only the distinct ones).

The product of its (nonzero) digits is 231525, while the sum is 45.

The square root of 1013557797 is about 31836.4224906003. The cubic root of 1013557797 is about 1004.4989943618.

The spelling of 1013557797 in words is "one billion, thirteen million, five hundred fifty-seven thousand, seven hundred ninety-seven".