149969536 has 16 divisors (see below), whose sum is σ = 298767690. Its totient is φ = 74984704.

The previous prime is 149969497. The next prime is 149969549. The reversal of 149969536 is 635969941.

It can be written as a sum of positive squares in only one way, i.e., 86862400 + 63107136 = 9320^2 + 7944^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585691 + ... + 585946.

Almost surely, 2^149969536 is an apocalyptic number.

149969536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

149969536 is a deficient number, since it is larger than the sum of its proper divisors (148798154).

149969536 is an equidigital number, since it uses as much as digits as its factorization.

149969536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171651 (or 1171639 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 52.

The square root of 149969536 is about 12246.2049631712. The cubic root of 149969536 is about 531.2933123441.

The spelling of 149969536 in words is "one hundred forty-nine million, nine hundred sixty-nine thousand, five hundred thirty-six".