7491813956 has 12 divisors (see below), whose sum is σ = 14302554000. Its totient is φ = 3405369960.

The previous prime is 7491813937. The next prime is 7491813991. The reversal of 7491813956 is 6593181947.

It is a super-2 number, since 2×7491813956² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7491813898 and 7491813907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85134206 + ... + 85134293.

It is an arithmetic number, because the mean of its divisors is an integer number (1191879500).

Almost surely, 2^7491813956 is an apocalyptic number.

It is an amenable number.

7491813956 is a deficient number, since it is larger than the sum of its proper divisors (6810740044).

7491813956 is a wasteful number, since it uses less digits than its factorization.

7491813956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170268514 (or 170268512 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 53.

The square root of 7491813956 is about 86555.2653279972. The cubic root of 7491813956 is about 1956.7213995752.

The spelling of 7491813956 in words is "seven billion, four hundred ninety-one million, eight hundred thirteen thousand, nine hundred fifty-six".