149865507 has 24 divisors (see below), whose sum is σ = 237369600. Its totient is φ = 90359280.

The previous prime is 149865497. The next prime is 149865509. The reversal of 149865507 is 705568941.

149865507 is a `hidden beast` number, since 1 + 4 + 98 + 6 + 550 + 7 = 666.

It is not a de Polignac number, because 149865507 - 2¹⁰ = 149864483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149865509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15898 + ... + 23504.

It is an arithmetic number, because the mean of its divisors is an integer number (9890400).

Almost surely, 2^149865507 is an apocalyptic number.

149865507 is a deficient number, since it is larger than the sum of its proper divisors (87504093).

149865507 is a wasteful number, since it uses less digits than its factorization.

149865507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7823 (or 7820 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 149865507 is about 12241.9568288734. The cubic root of 149865507 is about 531.1704369521.

The spelling of 149865507 in words is "one hundred forty-nine million, eight hundred sixty-five thousand, five hundred seven".