491372322 has 64 divisors (see below), whose sum is σ = 1176920064. Its totient is φ = 133721280.

The previous prime is 491372311. The next prime is 491372333. The reversal of 491372322 is 223273194.

It is an interprime number because it is at equal distance from previous prime (491372311) and next prime (491372333).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260848 + ... + 262724.

It is an arithmetic number, because the mean of its divisors is an integer number (18389376).

Almost surely, 2^491372322 is an apocalyptic number.

491372322 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 491372322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588460032).

491372322 is an abundant number, since it is smaller than the sum of its proper divisors (685547742).

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

491372322 is a wasteful number, since it uses less digits than its factorization.

491372322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183.

The product of its digits is 18144, while the sum is 33.

The square root of 491372322 is about 22166.9195424173. The cubic root of 491372322 is about 789.1088182675.

The spelling of 491372322 in words is "four hundred ninety-one million, three hundred seventy-two thousand, three hundred twenty-two".