190766538 has 12 divisors (see below), whose sum is σ = 413327538. Its totient is φ = 63588840.

The previous prime is 190766491. The next prime is 190766549. The reversal of 190766538 is 835667091.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 148425489 + 42341049 = 12183^2 + 6507^2 .

It is a junction number, because it is equal to n+sod(n) for n = 190766493 and 190766502.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5299053 + ... + 5299088.

Almost surely, 2^190766538 is an apocalyptic number.

190766538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

190766538 is an abundant number, since it is smaller than the sum of its proper divisors (222561000).

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

190766538 is a wasteful number, since it uses less digits than its factorization.

190766538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10598149 (or 10598146 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 190766538 is about 13811.8260197557. The cubic root of 190766538 is about 575.6617842288.

The spelling of 190766538 in words is "one hundred ninety million, seven hundred sixty-six thousand, five hundred thirty-eight".