189249754 has 8 divisors (see below), whose sum is σ = 284129460. Its totient is φ = 94539936.

The previous prime is 189249743. The next prime is 189249811. The reversal of 189249754 is 457942981.

It can be written as a sum of positive squares in 2 ways, for example, as 189200025 + 49729 = 13755^2 + 223^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 189249698 and 189249707.

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, 39649 + ... + 44164.

Almost surely, 2^189249754 is an apocalyptic number.

189249754 is a deficient number, since it is larger than the sum of its proper divisors (94879706).

189249754 is a wasteful number, since it uses less digits than its factorization.

189249754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84944.

The product of its digits is 725760, while the sum is 49.

The square root of 189249754 is about 13756.8075511726. The cubic root of 189249754 is about 574.1320278067.

The spelling of 189249754 in words is "one hundred eighty-nine million, two hundred forty-nine thousand, seven hundred fifty-four".