691118130 has 32 divisors (see below), whose sum is σ = 1659803904. Its totient is φ = 184173696.

The previous prime is 691118101. The next prime is 691118159. The reversal of 691118130 is 31811196.

It is an interprime number because it is at equal distance from previous prime (691118101) and next prime (691118159).

It is a super-2 number, since 2×691118130² = 955288539229393800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42759 + ... + 56661.

It is an arithmetic number, because the mean of its divisors is an integer number (51868872).

Almost surely, 2^691118130 is an apocalyptic number.

691118130 is an abundant number, since it is smaller than the sum of its proper divisors (968685774).

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

691118130 is a wasteful number, since it uses less digits than its factorization.

691118130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15570.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 691118130 is about 26289.1256986610. The cubic root of 691118130 is about 884.1326495385.

The spelling of 691118130 in words is "six hundred ninety-one million, one hundred eighteen thousand, one hundred thirty".