149721594 has 32 divisors (see below), whose sum is σ = 327573504. Its totient is φ = 45244080.

The previous prime is 149721589. The next prime is 149721629. The reversal of 149721594 is 495127941.

149721594 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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, 22317 + ... + 28239.

It is an arithmetic number, because the mean of its divisors is an integer number (10236672).

Almost surely, 2^149721594 is an apocalyptic number.

149721594 is an abundant number, since it is smaller than the sum of its proper divisors (177851910).

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

149721594 is a wasteful number, since it uses less digits than its factorization.

149721594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6322.

The product of its digits is 90720, while the sum is 42.

The square root of 149721594 is about 12236.0775577797. The cubic root of 149721594 is about 531.0003582053. Note that the first 3 decimals are identical.

The spelling of 149721594 in words is "one hundred forty-nine million, seven hundred twenty-one thousand, five hundred ninety-four".