7261632891 has 12 divisors (see below), whose sum is σ = 10516416768. Its totient is φ = 4828446384.

The previous prime is 7261632883. The next prime is 7261632893. The reversal of 7261632891 is 1982361627.

7261632891 is a `hidden beast` number, since 7 + 2 + 6 + 1 + 632 + 8 + 9 + 1 = 666.

It is not a de Polignac number, because 7261632891 - 2³ = 7261632883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7261632893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1049880 + ... + 1056773.

It is an arithmetic number, because the mean of its divisors is an integer number (876368064).

Almost surely, 2^7261632891 is an apocalyptic number.

7261632891 is a deficient number, since it is larger than the sum of its proper divisors (3254783877).

7261632891 is a wasteful number, since it uses less digits than its factorization.

7261632891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107042 (or 2107039 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 7261632891 is about 85215.2151379083. The cubic root of 7261632891 is about 1936.4729277544.

The spelling of 7261632891 in words is "seven billion, two hundred sixty-one million, six hundred thirty-two thousand, eight hundred ninety-one".