189074137 has 4 divisors (see below), whose sum is σ = 216084736. Its totient is φ = 162063540.

The previous prime is 189074131. The next prime is 189074143. The reversal of 189074137 is 731470981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 731470981 = 191 ⋅3829691.

It is an interprime number because it is at equal distance from previous prime (189074131) and next prime (189074143).

It is a cyclic number.

It is not a de Polignac number, because 189074137 - 2²⁷ = 54856409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189074137.

It is not an unprimeable number, because it can be changed into a prime (189074131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13505289 + ... + 13505302.

It is an arithmetic number, because the mean of its divisors is an integer number (54021184).

Almost surely, 2^189074137 is an apocalyptic number.

It is an amenable number.

189074137 is a deficient number, since it is larger than the sum of its proper divisors (27010599).

189074137 is an equidigital number, since it uses as much as digits as its factorization.

189074137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27010598.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 189074137 is about 13750.4231571250. The cubic root of 189074137 is about 573.9543815195.

The spelling of 189074137 in words is "one hundred eighty-nine million, seventy-four thousand, one hundred thirty-seven".