2639503474 has 4 divisors (see below), whose sum is σ = 3959255214. Its totient is φ = 1319751736.

The previous prime is 2639503459. The next prime is 2639503507. The reversal of 2639503474 is 4743059362.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4743059362 = 2 ⋅2371529681.

It can be written as a sum of positive squares in only one way, i.e., 2356422849 + 283080625 = 48543^2 + 16825^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2639503474.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659875867 + ... + 659875870.

Almost surely, 2^2639503474 is an apocalyptic number.

2639503474 is a deficient number, since it is larger than the sum of its proper divisors (1319751740).

2639503474 is a wasteful number, since it uses less digits than its factorization.

2639503474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319751739.

The product of its (nonzero) digits is 544320, while the sum is 43.

The square root of 2639503474 is about 51376.0982753654. The cubic root of 2639503474 is about 1381.9979939836.

The spelling of 2639503474 in words is "two billion, six hundred thirty-nine million, five hundred three thousand, four hundred seventy-four".