1013165557 has 4 divisors (see below), whose sum is σ = 1066490080. Its totient is φ = 959841036.

The previous prime is 1013165551. The next prime is 1013165563. The reversal of 1013165557 is 7555613101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1013165551) and next prime (1013165563).

It is a cyclic number.

It is not a de Polignac number, because 1013165557 - 2¹⁹ = 1012641269 is a prime.

It is a super-2 number, since 2×1013165557² = 2053008891782240498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013165551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26662233 + ... + 26662270.

It is an arithmetic number, because the mean of its divisors is an integer number (266622520).

Almost surely, 2^1013165557 is an apocalyptic number.

It is an amenable number.

1013165557 is a deficient number, since it is larger than the sum of its proper divisors (53324523).

1013165557 is an equidigital number, since it uses as much as digits as its factorization.

1013165557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53324522.

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 1013165557 is about 31830.2616545953. The cubic root of 1013165557 is about 1004.3693995413.

Adding to 1013165557 its reverse (7555613101), we get a palindrome (8568778658).

The spelling of 1013165557 in words is "one billion, thirteen million, one hundred sixty-five thousand, five hundred fifty-seven".