491958192 has 40 divisors (see below), whose sum is σ = 1386429120. Its totient is φ = 149078080.

The previous prime is 491958191. The next prime is 491958211. The reversal of 491958192 is 291859194.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (491958191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465342 + ... + 466397.

It is an arithmetic number, because the mean of its divisors is an integer number (34660728).

Almost surely, 2^491958192 is an apocalyptic number.

It is an amenable number.

491958192 is an abundant number, since it is smaller than the sum of its proper divisors (894470928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491958192 is a wasteful number, since it uses less digits than its factorization.

491958192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931761 (or 931755 counting only the distinct ones).

The product of its digits is 233280, while the sum is 48.

The square root of 491958192 is about 22180.1305676950. The cubic root of 491958192 is about 789.4223154825.

The spelling of 491958192 in words is "four hundred ninety-one million, nine hundred fifty-eight thousand, one hundred ninety-two".