189848638140 has 48 divisors (see below), whose sum is σ = 607515643392. Its totient is φ = 43393974336.

The previous prime is 189848638139. The next prime is 189848638183. The reversal of 189848638140 is 41836848981.

It is a super-2 number, since 2×189848638140² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 226009864 + ... + 226010703.

It is an arithmetic number, because the mean of its divisors is an integer number (12656575904).

Almost surely, 2^189848638140 is an apocalyptic number.

189848638140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189848638140 is an abundant number, since it is smaller than the sum of its proper divisors (417667005252).

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

189848638140 is a wasteful number, since it uses less digits than its factorization.

189848638140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452020586 (or 452020584 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 60.

The spelling of 189848638140 in words is "one hundred eighty-nine billion, eight hundred forty-eight million, six hundred thirty-eight thousand, one hundred forty".