8138854620 has 96 divisors (see below), whose sum is σ = 27268664640. Its totient is φ = 2003408640.

The previous prime is 8138854613. The next prime is 8138854657. The reversal of 8138854620 is 264588318.

8138854620 is a `hidden beast` number, since 8 + 1 + 3 + 88 + 546 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 572671 + ... + 586710.

It is an arithmetic number, because the mean of its divisors is an integer number (284048590).

Almost surely, 2^8138854620 is an apocalyptic number.

It is an amenable number.

8138854620 is an abundant number, since it is smaller than the sum of its proper divisors (19129810020).

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

8138854620 is a wasteful number, since it uses less digits than its factorization.

8138854620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159412 (or 1159404 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 8138854620 is about 90215.6007572970. The cubic root of 8138854620 is about 2011.5049099548.

The spelling of 8138854620 in words is "eight billion, one hundred thirty-eight million, eight hundred fifty-four thousand, six hundred twenty".