2161601562 has 32 divisors (see below), whose sum is σ = 4390329600. Its totient is φ = 709415168.

The previous prime is 2161601537. The next prime is 2161601587. The reversal of 2161601562 is 2651061612.

It is an interprime number because it is at equal distance from previous prime (2161601537) and next prime (2161601587).

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, 119158 + ... + 136094.

It is an arithmetic number, because the mean of its divisors is an integer number (137197800).

Almost surely, 2^2161601562 is an apocalyptic number.

2161601562 is an abundant number, since it is smaller than the sum of its proper divisors (2228728038).

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

2161601562 is a wasteful number, since it uses less digits than its factorization.

2161601562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17270.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 2161601562 is about 46493.0270255659. The cubic root of 2161601562 is about 1292.9802221936.

The spelling of 2161601562 in words is "two billion, one hundred sixty-one million, six hundred one thousand, five hundred sixty-two".