991245368 has 16 divisors (see below), whose sum is σ = 1859490000. Its totient is φ = 495381376.

The previous prime is 991245361. The next prime is 991245377. The reversal of 991245368 is 863542199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (991245361) 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, 12068 + ... + 46131.

It is an arithmetic number, because the mean of its divisors is an integer number (116218125).

Almost surely, 2^991245368 is an apocalyptic number.

It is an amenable number.

991245368 is a deficient number, since it is larger than the sum of its proper divisors (868244632).

991245368 is a wasteful number, since it uses less digits than its factorization.

991245368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60334 (or 60330 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 991245368 is about 31484.0494218898. The cubic root of 991245368 is about 997.0732317176.

The spelling of 991245368 in words is "nine hundred ninety-one million, two hundred forty-five thousand, three hundred sixty-eight".