815335149 has 16 divisors (see below), whose sum is σ = 1100563520. Its totient is φ = 536855040.

The previous prime is 815335139. The next prime is 815335153. The reversal of 815335149 is 941533518.

It is not a de Polignac number, because 815335149 - 2⁴ = 815335133 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 (815335109) 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, 154842 + ... + 160020.

It is an arithmetic number, because the mean of its divisors is an integer number (68785220).

Almost surely, 2^815335149 is an apocalyptic number.

It is an amenable number.

815335149 is a deficient number, since it is larger than the sum of its proper divisors (285228371).

815335149 is a wasteful number, since it uses less digits than its factorization.

815335149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5820.

The product of its digits is 64800, while the sum is 39.

The square root of 815335149 is about 28554.0741226186. The cubic root of 815335149 is about 934.2118856649.

The spelling of 815335149 in words is "eight hundred fifteen million, three hundred thirty-five thousand, one hundred forty-nine".