7890134487 has 64 divisors (see below), whose sum is σ = 11399270400. Its totient is φ = 4845496320.

The previous prime is 7890134471. The next prime is 7890134507. The reversal of 7890134487 is 7844310987.

It is not a de Polignac number, because 7890134487 - 2⁴ = 7890134471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7890134437) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35381658 + ... + 35381880.

It is an arithmetic number, because the mean of its divisors is an integer number (178113600).

Almost surely, 2^7890134487 is an apocalyptic number.

7890134487 is a deficient number, since it is larger than the sum of its proper divisors (3509135913).

7890134487 is a wasteful number, since it uses less digits than its factorization.

7890134487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The square root of 7890134487 is about 88826.4289893498. The cubic root of 7890134487 is about 1990.8023066437.

The spelling of 7890134487 in words is "seven billion, eight hundred ninety million, one hundred thirty-four thousand, four hundred eighty-seven".