2158634610 has 160 divisors (see below), whose sum is σ = 6364429632. Its totient is φ = 522780480.

The previous prime is 2158634587. The next prime is 2158634657. The reversal of 2158634610 is 164368512.

It is a happy number.

2158634610 is a `hidden beast` number, since 2 + 1 + 5 + 8 + 6 + 34 + 610 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2164632 + ... + 2165628.

Almost surely, 2^2158634610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2158634610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3182214816).

2158634610 is an abundant number, since it is smaller than the sum of its proper divisors (4205795022).

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

2158634610 is an frugal number, since it uses more digits than its factorization.

2158634610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 2158634610 is about 46461.1085748070. The cubic root of 2158634610 is about 1292.3883822017.

The spelling of 2158634610 in words is "two billion, one hundred fifty-eight million, six hundred thirty-four thousand, six hundred ten".