189121295288 has 16 divisors (see below), whose sum is σ = 355283055360. Its totient is φ = 94379147200.

The previous prime is 189121295273. The next prime is 189121295303. The reversal of 189121295288 is 882592121981.

It is an interprime number because it is at equal distance from previous prime (189121295273) and next prime (189121295303).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22683128 + ... + 22691463.

It is an arithmetic number, because the mean of its divisors is an integer number (22205190960).

Almost surely, 2^189121295288 is an apocalyptic number.

It is an amenable number.

189121295288 is a deficient number, since it is larger than the sum of its proper divisors (166161760072).

189121295288 is a wasteful number, since it uses less digits than its factorization.

189121295288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45375118 (or 45375114 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 56.

The spelling of 189121295288 in words is "one hundred eighty-nine billion, one hundred twenty-one million, two hundred ninety-five thousand, two hundred eighty-eight".