2116001620 has 24 divisors (see below), whose sum is σ = 4546944864. Its totient is φ = 826716576.

The previous prime is 2116001603. The next prime is 2116001647. The reversal of 2116001620 is 261006112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229374 + ... + 1231093.

It is an arithmetic number, because the mean of its divisors is an integer number (189456036).

Almost surely, 2^2116001620 is an apocalyptic number.

2116001620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2116001620 is an abundant number, since it is smaller than the sum of its proper divisors (2430943244).

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

2116001620 is a wasteful number, since it uses less digits than its factorization.

2116001620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460519 (or 2460517 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2116001620 is about 46000.0176086923. The cubic root of 2116001620 is about 1283.8235322288.

Adding to 2116001620 its reverse (261006112), we get a palindrome (2377007732).

The spelling of 2116001620 in words is "two billion, one hundred sixteen million, one thousand, six hundred twenty".