130905690 has 16 divisors (see below), whose sum is σ = 314173728. Its totient is φ = 34908176.

The previous prime is 130905659. The next prime is 130905701. The reversal of 130905690 is 96509031.

It is a super-2 number, since 2×130905690² = 34272599348752200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2181732 + ... + 2181791.

It is an arithmetic number, because the mean of its divisors is an integer number (19635858).

Almost surely, 2^130905690 is an apocalyptic number.

130905690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130905690 is an abundant number, since it is smaller than the sum of its proper divisors (183268038).

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

130905690 is a wasteful number, since it uses less digits than its factorization.

130905690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4363533.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 130905690 is about 11441.4024490007. The cubic root of 130905690 is about 507.7534014033.

The spelling of 130905690 in words is "one hundred thirty million, nine hundred five thousand, six hundred ninety".