189633620735 has 16 divisors (see below), whose sum is σ = 249218635680. Its totient is φ = 137663621760.

The previous prime is 189633620717. The next prime is 189633620789. The reversal of 189633620735 is 537026336981.

It is not a de Polignac number, because 189633620735 - 2²⁴ = 189616843519 is a prime.

It is a super-2 number, since 2×189633620735² (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 15 ways as a sum of consecutive naturals, for example, 24720236 + ... + 24727905.

It is an arithmetic number, because the mean of its divisors is an integer number (15576164730).

Almost surely, 2^189633620735 is an apocalyptic number.

189633620735 is a deficient number, since it is larger than the sum of its proper divisors (59585014945).

189633620735 is a wasteful number, since it uses less digits than its factorization.

189633620735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49448218.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 189633620735 in words is "one hundred eighty-nine billion, six hundred thirty-three million, six hundred twenty thousand, seven hundred thirty-five".