149194815 has 48 divisors (see below), whose sum is σ = 299894784. Its totient is φ = 61997760.

The previous prime is 149194807. The next prime is 149194819. The reversal of 149194815 is 518491941.

It is not a de Polignac number, because 149194815 - 2³ = 149194807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149194819) 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 47 ways as a sum of consecutive naturals, for example, 6834 + ... + 18576.

It is an arithmetic number, because the mean of its divisors is an integer number (6247808).

Almost surely, 2^149194815 is an apocalyptic number.

149194815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

149194815 is an abundant number, since it is smaller than the sum of its proper divisors (150699969).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149194815 is a wasteful number, since it uses less digits than its factorization.

149194815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11780 (or 11769 counting only the distinct ones).

The product of its digits is 51840, while the sum is 42.

The square root of 149194815 is about 12214.5329423601. The cubic root of 149194815 is about 530.3768709103.

The spelling of 149194815 in words is "one hundred forty-nine million, one hundred ninety-four thousand, eight hundred fifteen".