189054739 has 4 divisors (see below), whose sum is σ = 200175624. Its totient is φ = 177933856.

The previous prime is 189054713. The next prime is 189054781. The reversal of 189054739 is 937450981.

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: 937450981 = 37 ⋅25336513.

It is a cyclic number.

It is not a de Polignac number, because 189054739 - 2¹⁷ = 188923667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189054139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5560417 + ... + 5560450.

It is an arithmetic number, because the mean of its divisors is an integer number (50043906).

Almost surely, 2^189054739 is an apocalyptic number.

189054739 is a deficient number, since it is larger than the sum of its proper divisors (11120885).

189054739 is a wasteful number, since it uses less digits than its factorization.

189054739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11120884.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 189054739 is about 13749.7177789219. The cubic root of 189054739 is about 573.9347526267.

The spelling of 189054739 in words is "one hundred eighty-nine million, fifty-four thousand, seven hundred thirty-nine".