189785764 has 12 divisors (see below), whose sum is σ = 379571584. Its totient is φ = 81336744.

The previous prime is 189785759. The next prime is 189785777. The reversal of 189785764 is 467587981.

189785764 is an admirable 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, 3389004 + ... + 3389059.

Almost surely, 2^189785764 is an apocalyptic number.

189785764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189785764 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

189785764 is a wasteful number, since it uses less digits than its factorization.

189785764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6778074 (or 6778072 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 55.

The square root of 189785764 is about 13776.2754037512. The cubic root of 189785764 is about 574.6735528221.

It can be divided in two parts, 18978 and 5764, that added together give a palindrome (24742).

The spelling of 189785764 in words is "one hundred eighty-nine million, seven hundred eighty-five thousand, seven hundred sixty-four".