149971768 has 32 divisors (see below), whose sum is σ = 293524560. Its totient is φ = 71768320.

The previous prime is 149971763. The next prime is 149971777. The reversal of 149971768 is 867179941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149971763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13071 + ... + 21697.

Almost surely, 2^149971768 is an apocalyptic number.

It is an amenable number.

149971768 is a deficient number, since it is larger than the sum of its proper divisors (143552792).

149971768 is a wasteful number, since it uses less digits than its factorization.

149971768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8727 (or 8723 counting only the distinct ones).

The product of its digits is 762048, while the sum is 52.

The square root of 149971768 is about 12246.2960931050. The cubic root of 149971768 is about 531.2959480812.

The spelling of 149971768 in words is "one hundred forty-nine million, nine hundred seventy-one thousand, seven hundred sixty-eight".