149638155864 has 32 divisors (see below), whose sum is σ = 374134464000. Its totient is φ = 49874175392.

The previous prime is 149638155839. The next prime is 149638155913. The reversal of 149638155864 is 468551836941.

It is a junction number, because it is equal to n+sod(n) for n = 149638155798 and 149638155807.

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, 87504 + ... + 554015.

It is an arithmetic number, because the mean of its divisors is an integer number (11691702000).

Almost surely, 2^149638155864 is an apocalyptic number.

It is an amenable number.

149638155864 is an abundant number, since it is smaller than the sum of its proper divisors (224496308136).

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

149638155864 is a wasteful number, since it uses less digits than its factorization.

149638155864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651247 (or 651243 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 60.

The spelling of 149638155864 in words is "one hundred forty-nine billion, six hundred thirty-eight million, one hundred fifty-five thousand, eight hundred sixty-four".