2639529197 has 8 divisors (see below), whose sum is σ = 2800975680. Its totient is φ = 2481973120.

The previous prime is 2639529173. The next prime is 2639529209. The reversal of 2639529197 is 7919259362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2639529197 is a prime.

It is a super-2 number, since 2×2639529197² = 13934228763630929618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639529107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971204 + ... + 973917.

It is an arithmetic number, because the mean of its divisors is an integer number (350121960).

Almost surely, 2^2639529197 is an apocalyptic number.

It is an amenable number.

2639529197 is a deficient number, since it is larger than the sum of its proper divisors (161446483).

2639529197 is a wasteful number, since it uses less digits than its factorization.

2639529197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945203.

The product of its digits is 1837080, while the sum is 53.

The square root of 2639529197 is about 51376.3486149026. The cubic root of 2639529197 is about 1382.0024833404.

The spelling of 2639529197 in words is "two billion, six hundred thirty-nine million, five hundred twenty-nine thousand, one hundred ninety-seven".