149695815 has 16 divisors (see below), whose sum is σ = 239799168. Its totient is φ = 79742496.

The previous prime is 149695811. The next prime is 149695817. The reversal of 149695815 is 518596941.

149695815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149695815 - 2² = 149695811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149695811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8104 + ... + 19106.

It is an arithmetic number, because the mean of its divisors is an integer number (14987448).

Almost surely, 2^149695815 is an apocalyptic number.

149695815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

149695815 is a deficient number, since it is larger than the sum of its proper divisors (90103353).

149695815 is a wasteful number, since it uses less digits than its factorization.

149695815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11918.

The product of its digits is 388800, while the sum is 48.

The square root of 149695815 is about 12235.0241111328. The cubic root of 149695815 is about 530.9698806512.

The spelling of 149695815 in words is "one hundred forty-nine million, six hundred ninety-five thousand, eight hundred fifteen".