491602738 has 8 divisors (see below), whose sum is σ = 804440880. Its totient is φ = 223455780.

The previous prime is 491602733. The next prime is 491602747. The reversal of 491602738 is 837206194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 491602738.

It is not an unprimeable number, because it can be changed into a prime (491602733) 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, 11172768 + ... + 11172811.

It is an arithmetic number, because the mean of its divisors is an integer number (100555110).

Almost surely, 2^491602738 is an apocalyptic number.

491602738 is a deficient number, since it is larger than the sum of its proper divisors (312838142).

491602738 is a wasteful number, since it uses less digits than its factorization.

491602738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22345592.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 491602738 is about 22172.1162273699. The cubic root of 491602738 is about 789.2321428670.

The spelling of 491602738 in words is "four hundred ninety-one million, six hundred two thousand, seven hundred thirty-eight".