189465154 has 4 divisors (see below), whose sum is σ = 284197734. Its totient is φ = 94732576.

The previous prime is 189465151. The next prime is 189465161. The reversal of 189465154 is 451564981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451564981 = 7 ⋅64509283.

It can be written as a sum of positive squares in only one way, i.e., 184334929 + 5130225 = 13577^2 + 2265^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 189465154.

It is not an unprimeable number, because it can be changed into a prime (189465151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47366287 + ... + 47366290.

Almost surely, 2^189465154 is an apocalyptic number.

189465154 is a deficient number, since it is larger than the sum of its proper divisors (94732580).

189465154 is an equidigital number, since it uses as much as digits as its factorization.

189465154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94732579.

The product of its digits is 172800, while the sum is 43.

The square root of 189465154 is about 13764.6341760324. The cubic root of 189465154 is about 574.3497667946.

The spelling of 189465154 in words is "one hundred eighty-nine million, four hundred sixty-five thousand, one hundred fifty-four".