2385221664 has 48 divisors (see below), whose sum is σ = 7155667008. Its totient is φ = 681491712.

The previous prime is 2385221611. The next prime is 2385221681. The reversal of 2385221664 is 4661225832.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1774047 + ... + 1775390.

It is an arithmetic number, because the mean of its divisors is an integer number (149076396).

Almost surely, 2^2385221664 is an apocalyptic number.

2385221664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2385221664 is an abundant number, since it is smaller than the sum of its proper divisors (4770445344).

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

2385221664 is a wasteful number, since it uses less digits than its factorization.

2385221664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549457 (or 3549449 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 2385221664 is about 48838.7311874500. The cubic root of 2385221664 is about 1336.1121554762.

The spelling of 2385221664 in words is "two billion, three hundred eighty-five million, two hundred twenty-one thousand, six hundred sixty-four".