2955581638 has 16 divisors (see below), whose sum is σ = 4516585920. Its totient is φ = 1450166400.

The previous prime is 2955581609. The next prime is 2955581647. The reversal of 2955581638 is 8361855592.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24478 + ... + 80686.

It is an arithmetic number, because the mean of its divisors is an integer number (282286620).

Almost surely, 2^2955581638 is an apocalyptic number.

2955581638 is a deficient number, since it is larger than the sum of its proper divisors (1561004282).

2955581638 is a wasteful number, since it uses less digits than its factorization.

2955581638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56703.

The product of its digits is 2592000, while the sum is 52.

The square root of 2955581638 is about 54365.2613163958. The cubic root of 2955581638 is about 1435.0961078780.

The spelling of 2955581638 in words is "two billion, nine hundred fifty-five million, five hundred eighty-one thousand, six hundred thirty-eight".