149418815 has 24 divisors (see below), whose sum is σ = 221901408. Its totient is φ = 94573440.

The previous prime is 149418811. The next prime is 149418823. The reversal of 149418815 is 518814941.

It is not a de Polignac number, because 149418815 - 2² = 149418811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149418811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6716 + ... + 18545.

It is an arithmetic number, because the mean of its divisors is an integer number (9245892).

Almost surely, 2^149418815 is an apocalyptic number.

149418815 is a deficient number, since it is larger than the sum of its proper divisors (72482593).

149418815 is a wasteful number, since it uses less digits than its factorization.

149418815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25299 (or 25286 counting only the distinct ones).

The product of its digits is 46080, while the sum is 41.

The square root of 149418815 is about 12223.6989082683. The cubic root of 149418815 is about 530.6421728273.

The spelling of 149418815 in words is "one hundred forty-nine million, four hundred eighteen thousand, eight hundred fifteen".