189861748 has 12 divisors (see below), whose sum is σ = 334297600. Its totient is φ = 94348152.

The previous prime is 189861733. The next prime is 189861767. The reversal of 189861748 is 847168981.

It is a happy number.

189861748 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 189861695 and 189861704.

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, 144948 + ... + 146251.

Almost surely, 2^189861748 is an apocalyptic number.

It is an amenable number.

189861748 is a deficient number, since it is larger than the sum of its proper divisors (144435852).

189861748 is a wasteful number, since it uses less digits than its factorization.

189861748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291366 (or 291364 counting only the distinct ones).

The product of its digits is 774144, while the sum is 52.

The square root of 189861748 is about 13779.0329123636. The cubic root of 189861748 is about 574.7502360747.

The spelling of 189861748 in words is "one hundred eighty-nine million, eight hundred sixty-one thousand, seven hundred forty-eight".