189464554 has 4 divisors (see below), whose sum is σ = 284196834. Its totient is φ = 94732276.

The previous prime is 189464503. The next prime is 189464573. The reversal of 189464554 is 455464981.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 455464981 = 29 ⋅15705689.

It can be written as a sum of positive squares in only one way, i.e., 111619225 + 77845329 = 10565^2 + 8823^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47366137 + ... + 47366140.

Almost surely, 2^189464554 is an apocalyptic number.

189464554 is a deficient number, since it is larger than the sum of its proper divisors (94732280).

189464554 is an equidigital number, since it uses as much as digits as its factorization.

189464554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94732279.

The product of its digits is 691200, while the sum is 46.

The square root of 189464554 is about 13764.6123810298. The cubic root of 189464554 is about 574.3491605085.

The spelling of 189464554 in words is "one hundred eighty-nine million, four hundred sixty-four thousand, five hundred fifty-four".