1963166864 has 10 divisors (see below), whose sum is σ = 3803635830. Its totient is φ = 981583424.

The previous prime is 1963166839. The next prime is 1963166869. The reversal of 1963166864 is 4686613691.

It can be written as a sum of positive squares in only one way, i.e., 1917739264 + 45427600 = 43792^2 + 6740^2 .

It is not an unprimeable number, because it can be changed into a prime (1963166869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61348949 + ... + 61348980.

It is an arithmetic number, because the mean of its divisors is an integer number (380363583).

Almost surely, 2^1963166864 is an apocalyptic number.

It is an amenable number.

1963166864 is a deficient number, since it is larger than the sum of its proper divisors (1840468966).

1963166864 is a wasteful number, since it uses less digits than its factorization.

1963166864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122697937 (or 122697931 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 50.

The square root of 1963166864 is about 44307.6388899251. The cubic root of 1963166864 is about 1252.1386033340.

The spelling of 1963166864 in words is "one billion, nine hundred sixty-three million, one hundred sixty-six thousand, eight hundred sixty-four".