2639652819 has 16 divisors (see below), whose sum is σ = 3644766720. Its totient is φ = 1697282720.

The previous prime is 2639652811. The next prime is 2639652887. The reversal of 2639652819 is 9182569362.

It is a cyclic number.

It is not a de Polignac number, because 2639652819 - 2³ = 2639652811 is a prime.

It is a super-2 number, since 2×2639652819² = 13935534009709293522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2639652811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68854 + ... + 100100.

It is an arithmetic number, because the mean of its divisors is an integer number (227797920).

Almost surely, 2^2639652819 is an apocalyptic number.

2639652819 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2639652819 is a deficient number, since it is larger than the sum of its proper divisors (1005113901).

2639652819 is a wasteful number, since it uses less digits than its factorization.

2639652819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32250.

The product of its digits is 1399680, while the sum is 51.

The square root of 2639652819 is about 51377.5517030541. The cubic root of 2639652819 is about 1382.0240583046.

The spelling of 2639652819 in words is "two billion, six hundred thirty-nine million, six hundred fifty-two thousand, eight hundred nineteen".