7487642889 has 32 divisors (see below), whose sum is σ = 11323975680. Its totient is φ = 4888674000.

The previous prime is 7487642879. The next prime is 7487642941. The reversal of 7487642889 is 9882467847.

It is not a de Polignac number, because 7487642889 - 2⁸ = 7487642633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7487642879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276534 + ... + 302400.

It is an arithmetic number, because the mean of its divisors is an integer number (353874240).

Almost surely, 2^7487642889 is an apocalyptic number.

It is an amenable number.

7487642889 is a deficient number, since it is larger than the sum of its proper divisors (3836332791).

7487642889 is a wasteful number, since it uses less digits than its factorization.

7487642889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26098 (or 26092 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 63.

The square root of 7487642889 is about 86531.1671538065. The cubic root of 7487642889 is about 1956.3581973194.

The spelling of 7487642889 in words is "seven billion, four hundred eighty-seven million, six hundred forty-two thousand, eight hundred eighty-nine".