189845036590 has 16 divisors (see below), whose sum is σ = 372786617520. Its totient is φ = 69034558720.

The previous prime is 189845036587. The next prime is 189845036657. The reversal of 189845036590 is 95630548981.

It is a super-2 number, since 2×189845036590² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862931875 + ... + 862932094.

It is an arithmetic number, because the mean of its divisors is an integer number (23299163595).

Almost surely, 2^189845036590 is an apocalyptic number.

189845036590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189845036590 is a deficient number, since it is larger than the sum of its proper divisors (182941580930).

189845036590 is a wasteful number, since it uses less digits than its factorization.

189845036590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725863987.

The product of its (nonzero) digits is 9331200, while the sum is 58.

The spelling of 189845036590 in words is "one hundred eighty-nine billion, eight hundred forty-five million, thirty-six thousand, five hundred ninety".