2054397664 has 24 divisors (see below), whose sum is σ = 4412286648. Its totient is φ = 933816960.

The previous prime is 2054397661. The next prime is 2054397673. The reversal of 2054397664 is 4667934502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2054397661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2917827 + ... + 2918530.

It is an arithmetic number, because the mean of its divisors is an integer number (183845277).

Almost surely, 2^2054397664 is an apocalyptic number.

It is an amenable number.

2054397664 is an abundant number, since it is smaller than the sum of its proper divisors (2357888984).

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

2054397664 is a wasteful number, since it uses less digits than its factorization.

2054397664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5836378 (or 5836370 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The square root of 2054397664 is about 45325.4637483170. The cubic root of 2054397664 is about 1271.2418183882.

The spelling of 2054397664 in words is "two billion, fifty-four million, three hundred ninety-seven thousand, six hundred sixty-four".