2840639364 has 36 divisors (see below), whose sum is σ = 7278874876. Its totient is φ = 933907968.

The previous prime is 2840639363. The next prime is 2840639371. The reversal of 2840639364 is 4639360482.

2840639364 is a `hidden beast` number, since 2 + 8 + 4 + 0 + 639 + 3 + 6 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1774094400 + 1066544964 = 42120^2 + 32658^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (2840639363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 537829 + ... + 543084.

Almost surely, 2^2840639364 is an apocalyptic number.

It is an amenable number.

2840639364 is an abundant number, since it is smaller than the sum of its proper divisors (4438235512).

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

2840639364 is a wasteful number, since it uses less digits than its factorization.

2840639364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080996 (or 1080991 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The square root of 2840639364 is about 53297.6487661510. The cubic root of 2840639364 is about 1416.2460132261.

The spelling of 2840639364 in words is "two billion, eight hundred forty million, six hundred thirty-nine thousand, three hundred sixty-four".