189973756 has 12 divisors (see below), whose sum is σ = 379947568. Its totient is φ = 81417312.

The previous prime is 189973753. The next prime is 189973769. The reversal of 189973756 is 657379981.

189973756 is an admirable number.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 189973697 and 189973706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189973753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3392361 + ... + 3392416.

Almost surely, 2^189973756 is an apocalyptic number.

It is an amenable number.

189973756 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.

189973756 is a wasteful number, since it uses less digits than its factorization.

189973756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6784788 (or 6784786 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 55.

The square root of 189973756 is about 13783.0967492795. The cubic root of 189973756 is about 574.8632375432.

The spelling of 189973756 in words is "one hundred eighty-nine million, nine hundred seventy-three thousand, seven hundred fifty-six".