189649732734 has 96 divisors (see below), whose sum is σ = 528826521600. Its totient is φ = 47670638400.

The previous prime is 189649732711. The next prime is 189649732771. The reversal of 189649732734 is 437237946981.

189649732734 is a `hidden beast` number, since 1 + 8 + 96 + 497 + 3 + 27 + 34 = 666.

It is a super-2 number, since 2×189649732734² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2164009 + ... + 2249940.

It is an arithmetic number, because the mean of its divisors is an integer number (5508609600).

Almost surely, 2^189649732734 is an apocalyptic number.

189649732734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

189649732734 is an abundant number, since it is smaller than the sum of its proper divisors (339176788866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189649732734 is a wasteful number, since it uses less digits than its factorization.

189649732734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4414006 (or 4414003 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 63.

The spelling of 189649732734 in words is "one hundred eighty-nine billion, six hundred forty-nine million, seven hundred thirty-two thousand, seven hundred thirty-four".