2864863640 has 16 divisors (see below), whose sum is σ = 6445943280. Its totient is φ = 1145945440.

The previous prime is 2864863637. The next prime is 2864863697. The reversal of 2864863640 is 463684682.

It is a congruent number.

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, 35810756 + ... + 35810835.

It is an arithmetic number, because the mean of its divisors is an integer number (402871455).

Almost surely, 2^2864863640 is an apocalyptic number.

2864863640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2864863640 is an abundant number, since it is smaller than the sum of its proper divisors (3581079640).

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

2864863640 is a wasteful number, since it uses less digits than its factorization.

2864863640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71621602 (or 71621598 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 47.

The square root of 2864863640 is about 53524.4209683767. The cubic root of 2864863640 is about 1420.2604230425.

The spelling of 2864863640 in words is "two billion, eight hundred sixty-four million, eight hundred sixty-three thousand, six hundred forty".