109190902191 has 24 divisors (see below), whose sum is σ = 178270865280. Its totient is φ = 59110862832.

The previous prime is 109190902187. The next prime is 109190902313. The reversal of 109190902191 is 191209091901.

It is not a de Polignac number, because 109190902191 - 2² = 109190902187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109190902151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19544451 + ... + 19550036.

It is an arithmetic number, because the mean of its divisors is an integer number (7427952720).

Almost surely, 2^109190902191 is an apocalyptic number.

109190902191 is a deficient number, since it is larger than the sum of its proper divisors (69079963089).

109190902191 is a wasteful number, since it uses less digits than its factorization.

109190902191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39094523 (or 39094516 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 42.

The spelling of 109190902191 in words is "one hundred nine billion, one hundred ninety million, nine hundred two thousand, one hundred ninety-one".