2155594765 has 8 divisors (see below), whose sum is σ = 2670156288. Its totient is φ = 1668847440.

The previous prime is 2155594741. The next prime is 2155594769. The reversal of 2155594765 is 5674955512.

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

It is not a de Polignac number, because 2155594765 - 2⁵ = 2155594733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155594769) by changing a digit.

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, 6953377 + ... + 6953686.

It is an arithmetic number, because the mean of its divisors is an integer number (333769536).

Almost surely, 2^2155594765 is an apocalyptic number.

It is an amenable number.

2155594765 is a deficient number, since it is larger than the sum of its proper divisors (514561523).

2155594765 is a wasteful number, since it uses less digits than its factorization.

2155594765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13907099.

The product of its digits is 1890000, while the sum is 49.

The square root of 2155594765 is about 46428.3831831349. The cubic root of 2155594765 is about 1291.7814389771.

The spelling of 2155594765 in words is "two billion, one hundred fifty-five million, five hundred ninety-four thousand, seven hundred sixty-five".