9147854864 has 20 divisors (see below), whose sum is σ = 17797519740. Its totient is φ = 4554946560.

The previous prime is 9147854839. The next prime is 9147854899. The reversal of 9147854864 is 4684587419.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8211984400 + 935870464 = 90620^2 + 30592^2 .

It is a super-2 number, since 2×9147854864² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182329 + ... + 1190040.

It is an arithmetic number, because the mean of its divisors is an integer number (889875987).

Almost surely, 2^9147854864 is an apocalyptic number.

It is an amenable number.

9147854864 is a deficient number, since it is larger than the sum of its proper divisors (8649664876).

9147854864 is a wasteful number, since it uses less digits than its factorization.

9147854864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372618 (or 2372612 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 56.

The square root of 9147854864 is about 95644.4188857876. The cubic root of 9147854864 is about 2091.4127688460.

The spelling of 9147854864 in words is "nine billion, one hundred forty-seven million, eight hundred fifty-four thousand, eight hundred sixty-four".