7840491276 has 12 divisors (see below), whose sum is σ = 18294479672. Its totient is φ = 2613497088.

The previous prime is 7840491247. The next prime is 7840491277. The reversal of 7840491276 is 6721940487.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×7840491276² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7840491277) 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, 326687125 + ... + 326687148.

Almost surely, 2^7840491276 is an apocalyptic number.

It is an amenable number.

7840491276 is an abundant number, since it is smaller than the sum of its proper divisors (10453988396).

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

7840491276 is a wasteful number, since it uses less digits than its factorization.

7840491276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653374280 (or 653374278 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 7840491276 is about 88546.5486396844. The cubic root of 7840491276 is about 1986.6182706832.

The spelling of 7840491276 in words is "seven billion, eight hundred forty million, four hundred ninety-one thousand, two hundred seventy-six".