189689754 has 32 divisors (see below), whose sum is σ = 393376320. Its totient is φ = 60907392.

The previous prime is 189689741. The next prime is 189689767. The reversal of 189689754 is 457986981.

It is an interprime number because it is at equal distance from previous prime (189689741) and next prime (189689767).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 189689694 and 189689703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94182 + ... + 96174.

It is an arithmetic number, because the mean of its divisors is an integer number (12293010).

Almost surely, 2^189689754 is an apocalyptic number.

189689754 is an abundant number, since it is smaller than the sum of its proper divisors (203686566).

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

189689754 is a wasteful number, since it uses less digits than its factorization.

189689754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574.

The product of its digits is 4354560, while the sum is 57.

The square root of 189689754 is about 13772.7903490905. The cubic root of 189689754 is about 574.5766300019.

The spelling of 189689754 in words is "one hundred eighty-nine million, six hundred eighty-nine thousand, seven hundred fifty-four".