1013557843 has 12 divisors (see below), whose sum is σ = 1054198152. Its totient is φ = 973901280.

The previous prime is 1013557823. The next prime is 1013557871. The reversal of 1013557843 is 3487553101.

It is a de Polignac number, because none of the positive numbers 2^k-1013557843 is a prime.

It is a super-2 number, since 2×1013557843² = 2054599002213625298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013557823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181296 + ... + 186802.

It is an arithmetic number, because the mean of its divisors is an integer number (87849846).

Almost surely, 2^1013557843 is an apocalyptic number.

1013557843 is a deficient number, since it is larger than the sum of its proper divisors (40640309).

1013557843 is an frugal number, since it uses more digits than its factorization.

1013557843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682 (or 5615 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 1013557843 is about 31836.4232130433. The cubic root of 1013557843 is about 1004.4990095580.

The spelling of 1013557843 in words is "one billion, thirteen million, five hundred fifty-seven thousand, eight hundred forty-three".