2285981664 has 48 divisors (see below), whose sum is σ = 6194280960. Its totient is φ = 737412480.

The previous prime is 2285981647. The next prime is 2285981717. The reversal of 2285981664 is 4661895822.

It is a happy number.

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

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 381094 + ... + 387045.

It is an arithmetic number, because the mean of its divisors is an integer number (129047520).

Almost surely, 2^2285981664 is an apocalyptic number.

2285981664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2285981664 is an abundant number, since it is smaller than the sum of its proper divisors (3908299296).

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

2285981664 is a wasteful number, since it uses less digits than its factorization.

2285981664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768183 (or 768175 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The square root of 2285981664 is about 47811.9406006491. The cubic root of 2285981664 is about 1317.3188737870.

The spelling of 2285981664 in words is "two billion, two hundred eighty-five million, nine hundred eighty-one thousand, six hundred sixty-four".