2731390655 has 16 divisors (see below), whose sum is σ = 3749488704. Its totient is φ = 1871162880.

The previous prime is 2731390621. The next prime is 2731390667. The reversal of 2731390655 is 5560931372.

It is a happy number.

It is not a de Polignac number, because 2731390655 - 2²⁴ = 2714613439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359 + ... + 73911.

It is an arithmetic number, because the mean of its divisors is an integer number (234343044).

Almost surely, 2^2731390655 is an apocalyptic number.

2731390655 is a deficient number, since it is larger than the sum of its proper divisors (1018098049).

2731390655 is a wasteful number, since it uses less digits than its factorization.

2731390655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74626.

The product of its (nonzero) digits is 170100, while the sum is 41.

The square root of 2731390655 is about 52262.7080718173. The cubic root of 2731390655 is about 1397.8522604096.

The spelling of 2731390655 in words is "two billion, seven hundred thirty-one million, three hundred ninety thousand, six hundred fifty-five".