189764154 has 32 divisors (see below), whose sum is σ = 431988480. Its totient is φ = 61711200.

The previous prime is 189764147. The next prime is 189764161. The reversal of 189764154 is 451467981.

It is an interprime number because it is at equal distance from previous prime (189764147) and next prime (189764161).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40642 + ... + 45069.

It is an arithmetic number, because the mean of its divisors is an integer number (13499640).

Almost surely, 2^189764154 is an apocalyptic number.

189764154 is an abundant number, since it is smaller than the sum of its proper divisors (242224326).

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

189764154 is a wasteful number, since it uses less digits than its factorization.

189764154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85763 (or 85757 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 189764154 is about 13775.4910620275. The cubic root of 189764154 is about 574.6517402151.

The spelling of 189764154 in words is "one hundred eighty-nine million, seven hundred sixty-four thousand, one hundred fifty-four".