7258131816 has 64 divisors (see below), whose sum is σ = 19550160000. Its totient is φ = 2232238848.

The previous prime is 7258131767. The next prime is 7258131821. The reversal of 7258131816 is 6181318527.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 931810 + ... + 939566.

It is an arithmetic number, because the mean of its divisors is an integer number (305471250).

Almost surely, 2^7258131816 is an apocalyptic number.

It is an amenable number.

7258131816 is an abundant number, since it is smaller than the sum of its proper divisors (12292028184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7258131816 is a wasteful number, since it uses less digits than its factorization.

7258131816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10778 (or 10774 counting only the distinct ones).

The product of its digits is 80640, while the sum is 42.

The square root of 7258131816 is about 85194.6701149784. The cubic root of 7258131816 is about 1936.1616650339.

The spelling of 7258131816 in words is "seven billion, two hundred fifty-eight million, one hundred thirty-one thousand, eight hundred sixteen".