190813139 has 32 divisors (see below), whose sum is σ = 222082560. Its totient is φ = 162400000.

The previous prime is 190813121. The next prime is 190813177. The reversal of 190813139 is 931318091.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190813139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 190813099 and 190813108.

It is not an unprimeable number, because it can be changed into a prime (190813439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1889189 + ... + 1889289.

It is an arithmetic number, because the mean of its divisors is an integer number (6940080).

Almost surely, 2^190813139 is an apocalyptic number.

190813139 is a deficient number, since it is larger than the sum of its proper divisors (31269421).

190813139 is a wasteful number, since it uses less digits than its factorization.

190813139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 190813139 is about 13813.5129130862. The cubic root of 190813139 is about 575.7086551860.

The spelling of 190813139 in words is "one hundred ninety million, eight hundred thirteen thousand, one hundred thirty-nine".