190987766968 has 32 divisors (see below), whose sum is σ = 369066297600. Its totient is φ = 92602042848.

The previous prime is 190987766951. The next prime is 190987766989. The reversal of 190987766968 is 869667789091.

It is a junction number, because it is equal to n+sod(n) for n = 190987766894 and 190987766903.

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, 1949296 + ... + 2044927.

It is an arithmetic number, because the mean of its divisors is an integer number (11533321800).

Almost surely, 2^190987766968 is an apocalyptic number.

It is an amenable number.

190987766968 is a deficient number, since it is larger than the sum of its proper divisors (178078530632).

190987766968 is a wasteful number, since it uses less digits than its factorization.

190987766968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994411 (or 3994407 counting only the distinct ones).

The product of its (nonzero) digits is 493807104, while the sum is 76.

The spelling of 190987766968 in words is "one hundred ninety billion, nine hundred eighty-seven million, seven hundred sixty-six thousand, nine hundred sixty-eight".