190108908156 has 24 divisors (see below), whose sum is σ = 451105885440. Its totient is φ = 62295574192.

The previous prime is 190108908151. The next prime is 190108908181. The reversal of 190108908156 is 651809801091.

It is a super-2 number, since 2×190108908156² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190108908151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134256996 + ... + 134258411.

It is an arithmetic number, because the mean of its divisors is an integer number (18796078560).

Almost surely, 2^190108908156 is an apocalyptic number.

It is an amenable number.

190108908156 is an abundant number, since it is smaller than the sum of its proper divisors (260996977284).

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

190108908156 is a wasteful number, since it uses less digits than its factorization.

190108908156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268515473 (or 268515471 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 48.

The spelling of 190108908156 in words is "one hundred ninety billion, one hundred eight million, nine hundred eight thousand, one hundred fifty-six".