2158465632 has 48 divisors (see below), whose sum is σ = 5718952512. Its totient is φ = 712760960.

The previous prime is 2158465619. The next prime is 2158465637. The reversal of 2158465632 is 2365648512.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158465637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94794 + ... + 115337.

It is an arithmetic number, because the mean of its divisors is an integer number (119144844).

Almost surely, 2^2158465632 is an apocalyptic number.

It is an amenable number.

2158465632 is an abundant number, since it is smaller than the sum of its proper divisors (3560486880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2158465632 is a wasteful number, since it uses less digits than its factorization.

2158465632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210251 (or 210243 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 2158465632 is about 46459.2900505378. The cubic root of 2158465632 is about 1292.3546585844.

The spelling of 2158465632 in words is "two billion, one hundred fifty-eight million, four hundred sixty-five thousand, six hundred thirty-two".