7464391491 has 8 divisors (see below), whose sum is σ = 9953069904. Its totient is φ = 4975987040.

The previous prime is 7464391483. The next prime is 7464391511. The reversal of 7464391491 is 1941934647.

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

It is a cyclic number.

It is not a de Polignac number, because 7464391491 - 2³ = 7464391483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7464391491.

It is not an unprimeable number, because it can be changed into a prime (7464391421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6961 + ... + 122381.

It is an arithmetic number, because the mean of its divisors is an integer number (1244133738).

Almost surely, 2^7464391491 is an apocalyptic number.

7464391491 is a deficient number, since it is larger than the sum of its proper divisors (2488678413).

7464391491 is a wasteful number, since it uses less digits than its factorization.

7464391491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136981.

The product of its digits is 653184, while the sum is 48.

The square root of 7464391491 is about 86396.7099547199. The cubic root of 7464391491 is about 1954.3310694286.

The spelling of 7464391491 in words is "seven billion, four hundred sixty-four million, three hundred ninety-one thousand, four hundred ninety-one".