8518253644 has 24 divisors (see below), whose sum is σ = 15410656800. Its totient is φ = 4117115520.

The previous prime is 8518253599. The next prime is 8518253671. The reversal of 8518253644 is 4463528158.

It is a junction number, because it is equal to n+sod(n) for n = 8518253594 and 8518253603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220384 + ... + 256135.

It is an arithmetic number, because the mean of its divisors is an integer number (642110700).

Almost surely, 2^8518253644 is an apocalyptic number.

It is an amenable number.

8518253644 is a deficient number, since it is larger than the sum of its proper divisors (6892403156).

8518253644 is a wasteful number, since it uses less digits than its factorization.

8518253644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476673 (or 476671 counting only the distinct ones).

The product of its digits is 921600, while the sum is 46.

The square root of 8518253644 is about 92294.3857664159. The cubic root of 8518253644 is about 2042.2873903663.

The spelling of 8518253644 in words is "eight billion, five hundred eighteen million, two hundred fifty-three thousand, six hundred forty-four".