149953816 has 8 divisors (see below), whose sum is σ = 281163420. Its totient is φ = 74976904.

The previous prime is 149953777. The next prime is 149953823. The reversal of 149953816 is 618359941.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×149953816² = 44972293865923712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9372106 + ... + 9372121.

Almost surely, 2^149953816 is an apocalyptic number.

It is an amenable number.

149953816 is a deficient number, since it is larger than the sum of its proper divisors (131209604).

149953816 is a wasteful number, since it uses less digits than its factorization.

149953816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18744233 (or 18744229 counting only the distinct ones).

The product of its digits is 233280, while the sum is 46.

The square root of 149953816 is about 12245.5631148592. The cubic root of 149953816 is about 531.2747480789.

The spelling of 149953816 in words is "one hundred forty-nine million, nine hundred fifty-three thousand, eight hundred sixteen".