190378868 has 12 divisors (see below), whose sum is σ = 334908672. Its totient is φ = 94690680.

The previous prime is 190378849. The next prime is 190378871. The reversal of 190378868 is 868873091.

It is a happy number.

It is a super-2 number, since 2×190378868² = 72488226761922848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123830 + ... + 125357.

It is an arithmetic number, because the mean of its divisors is an integer number (27909056).

Almost surely, 2^190378868 is an apocalyptic number.

It is an amenable number.

190378868 is a deficient number, since it is larger than the sum of its proper divisors (144529804).

190378868 is a wasteful number, since it uses less digits than its factorization.

190378868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249382 (or 249380 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 190378868 is about 13797.7848946851. The cubic root of 190378868 is about 575.2715722834.

The spelling of 190378868 in words is "one hundred ninety million, three hundred seventy-eight thousand, eight hundred sixty-eight".