149087816 has 16 divisors (see below), whose sum is σ = 282681900. Its totient is φ = 73705984.

The previous prime is 149087803. The next prime is 149087819. The reversal of 149087816 is 618780941.

It can be written as a sum of positive squares in 2 ways, for example, as 147525316 + 1562500 = 12146^2 + 1250^2 .

It is not an unprimeable number, because it can be changed into a prime (149087819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103985 + ... + 105408.

Almost surely, 2^149087816 is an apocalyptic number.

It is an amenable number.

149087816 is a deficient number, since it is larger than the sum of its proper divisors (133594084).

149087816 is a wasteful number, since it uses less digits than its factorization.

149087816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209488 (or 209484 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 149087816 is about 12210.1521694040. The cubic root of 149087816 is about 530.2500493297.

The spelling of 149087816 in words is "one hundred forty-nine million, eighty-seven thousand, eight hundred sixteen".