2043657064 has 8 divisors (see below), whose sum is σ = 3831857010. Its totient is φ = 1021828528.

The previous prime is 2043657059. The next prime is 2043657073. The reversal of 2043657064 is 4607563402.

It can be written as a sum of positive squares in only one way, i.e., 1533348964 + 510308100 = 39158^2 + 22590^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127728559 + ... + 127728574.

Almost surely, 2^2043657064 is an apocalyptic number.

It is an amenable number.

2043657064 is a deficient number, since it is larger than the sum of its proper divisors (1788199946).

2043657064 is a wasteful number, since it uses less digits than its factorization.

2043657064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255457139 (or 255457135 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 2043657064 is about 45206.8254138686. The cubic root of 2043657064 is about 1269.0225525133.

The spelling of 2043657064 in words is "two billion, forty-three million, six hundred fifty-seven thousand, sixty-four".