1639052655 has 8 divisors (see below), whose sum is σ = 2622484272. Its totient is φ = 874161408.

The previous prime is 1639052647. The next prime is 1639052669. The reversal of 1639052655 is 5562509361.

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

It is not a de Polignac number, because 1639052655 - 2³ = 1639052647 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 54635074 + ... + 54635103.

It is an arithmetic number, because the mean of its divisors is an integer number (327810534).

Almost surely, 2^1639052655 is an apocalyptic number.

1639052655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1639052655 is a deficient number, since it is larger than the sum of its proper divisors (983431617).

1639052655 is a wasteful number, since it uses less digits than its factorization.

1639052655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109270185.

The product of its (nonzero) digits is 243000, while the sum is 42.

The square root of 1639052655 is about 40485.2152643406. The cubic root of 1639052655 is about 1179.0465953452.

The spelling of 1639052655 in words is "one billion, six hundred thirty-nine million, fifty-two thousand, six hundred fifty-five".