2639920354 has 16 divisors (see below), whose sum is σ = 4043856960. Its totient is φ = 1292082480.

The previous prime is 2639920337. The next prime is 2639920411. The reversal of 2639920354 is 4530299362.

It is a self number, because there is not a number n which added to its sum of digits gives 2639920354.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18169 + ... + 74899.

It is an arithmetic number, because the mean of its divisors is an integer number (252741060).

Almost surely, 2^2639920354 is an apocalyptic number.

2639920354 is a deficient number, since it is larger than the sum of its proper divisors (1403936606).

2639920354 is a wasteful number, since it uses less digits than its factorization.

2639920354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57225.

The product of its (nonzero) digits is 349920, while the sum is 43.

The square root of 2639920354 is about 51380.1552547285. The cubic root of 2639920354 is about 1382.0707471865.

The spelling of 2639920354 in words is "two billion, six hundred thirty-nine million, nine hundred twenty thousand, three hundred fifty-four".