190838307900 has 72 divisors (see below), whose sum is σ = 552212156160. Its totient is φ = 50885301440.

The previous prime is 190838307899. The next prime is 190838307901. The reversal of 190838307900 is 9703838091.

It is an interprime number because it is at equal distance from previous prime (190838307899) and next prime (190838307901).

It is a self number, because there is not a number n which added to its sum of digits gives 190838307900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190838307901) 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, 3931981 + ... + 3980219.

It is an arithmetic number, because the mean of its divisors is an integer number (7669613280).

Almost surely, 2^190838307900 is an apocalyptic number.

190838307900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190838307900 is an abundant number, since it is smaller than the sum of its proper divisors (361373848260).

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

190838307900 is a wasteful number, since it uses less digits than its factorization.

190838307900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61443 (or 61436 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 48.

The spelling of 190838307900 in words is "one hundred ninety billion, eight hundred thirty-eight million, three hundred seven thousand, nine hundred".