491370156484 has 81 divisors (see below), whose sum is σ = 933415126357. Its totient is φ = 226286914048.

The previous prime is 491370156469. The next prime is 491370156499. The reversal of 491370156484 is 484651073194.

The square root of 491370156484 is 700978.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (491370156469) and next prime (491370156499).

It can be written as a sum of positive squares in 13 ways, for example, as 129543846084 + 361826310400 = 359922^2 + 601520^2 .

It is a super-2 number, since 2×491370156484² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1263162162 + ... + 1263162550.

Almost surely, 2^491370156484 is an apocalyptic number.

491370156484 is the 700978-th square number.

It is an amenable number.

491370156484 is a deficient number, since it is larger than the sum of its proper divisors (442044969873).

491370156484 is an equidigital number, since it uses as much as digits as its factorization.

491370156484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 491370156484 in words is "four hundred ninety-one billion, three hundred seventy million, one hundred fifty-six thousand, four hundred eighty-four".