2002643764 has 72 divisors (see below), whose sum is σ = 4042438848. Its totient is φ = 860766720.

The previous prime is 2002643723. The next prime is 2002643771. The reversal of 2002643764 is 4673462002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2257329 + ... + 2258215.

It is an arithmetic number, because the mean of its divisors is an integer number (56144984).

Almost surely, 2^2002643764 is an apocalyptic number.

It is an amenable number.

2002643764 is an abundant number, since it is smaller than the sum of its proper divisors (2039795084).

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

2002643764 is a wasteful number, since it uses less digits than its factorization.

2002643764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 2002643764 is about 44750.9079684424. The cubic root of 2002643764 is about 1260.4759611100.

The spelling of 2002643764 in words is "two billion, two million, six hundred forty-three thousand, seven hundred sixty-four".