190909101020 has 24 divisors (see below), whose sum is σ = 437355395568. Its totient is φ = 69421491200.

The previous prime is 190909101011. The next prime is 190909101073. The reversal of 190909101020 is 20101909091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433884101 + ... + 433884540.

It is an arithmetic number, because the mean of its divisors is an integer number (18223141482).

Almost surely, 2^190909101020 is an apocalyptic number.

190909101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190909101020 is an abundant number, since it is smaller than the sum of its proper divisors (246446294548).

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

190909101020 is a wasteful number, since it uses less digits than its factorization.

190909101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867768661 (or 867768659 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 32.

The spelling of 190909101020 in words is "one hundred ninety billion, nine hundred nine million, one hundred one thousand, twenty".