189864450274 has 4 divisors (see below), whose sum is σ = 284796675414. Its totient is φ = 94932225136.

The previous prime is 189864450271. The next prime is 189864450301. The reversal of 189864450274 is 472054468981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 189828390249 + 36060025 = 435693^2 + 6005^2 .

It is not an unprimeable number, because it can be changed into a prime (189864450271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47466112567 + ... + 47466112570.

Almost surely, 2^189864450274 is an apocalyptic number.

189864450274 is a deficient number, since it is larger than the sum of its proper divisors (94932225140).

189864450274 is an equidigital number, since it uses as much as digits as its factorization.

189864450274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94932225139.

The product of its (nonzero) digits is 15482880, while the sum is 58.

The spelling of 189864450274 in words is "one hundred eighty-nine billion, eight hundred sixty-four million, four hundred fifty thousand, two hundred seventy-four".