149020815 has 16 divisors (see below), whose sum is σ = 238675968. Its totient is φ = 79396896.

The previous prime is 149020783. The next prime is 149020831. The reversal of 149020815 is 518020941.

It is a happy number.

It is not a de Polignac number, because 149020815 - 2⁵ = 149020783 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12042 + ... + 21048.

It is an arithmetic number, because the mean of its divisors is an integer number (14917248).

Almost surely, 2^149020815 is an apocalyptic number.

149020815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

149020815 is a deficient number, since it is larger than the sum of its proper divisors (89655153).

149020815 is a wasteful number, since it uses less digits than its factorization.

149020815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10118.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 149020815 is about 12207.4082015799. The cubic root of 149020815 is about 530.1706048611.

The spelling of 149020815 in words is "one hundred forty-nine million, twenty thousand, eight hundred fifteen".