913820144 has 20 divisors (see below), whose sum is σ = 1771005696. Its totient is φ = 456786432.

The previous prime is 913820137. The next prime is 913820147. The reversal of 913820144 is 441028319.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 913820144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913820147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93137 + ... + 102479.

Almost surely, 2^913820144 is an apocalyptic number.

It is an amenable number.

913820144 is a deficient number, since it is larger than the sum of its proper divisors (857185552).

913820144 is a wasteful number, since it uses less digits than its factorization.

913820144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15464 (or 15458 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 913820144 is about 30229.4582154560. The cubic root of 913820144 is about 970.4062293967.

The spelling of 913820144 in words is "nine hundred thirteen million, eight hundred twenty thousand, one hundred forty-four".