2109348621 has 24 divisors (see below), whose sum is σ = 3167708544. Its totient is φ = 1402660800.

The previous prime is 2109348613. The next prime is 2109348623. The reversal of 2109348621 is 1268439012.

2109348621 is a `hidden beast` number, since 21 + 0 + 9 + 3 + 4 + 8 + 621 = 666.

It is not a de Polignac number, because 2109348621 - 2³ = 2109348613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109348623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86620 + ... + 108266.

It is an arithmetic number, because the mean of its divisors is an integer number (131987856).

Almost surely, 2^2109348621 is an apocalyptic number.

It is an amenable number.

2109348621 is a deficient number, since it is larger than the sum of its proper divisors (1058359923).

2109348621 is an equidigital number, since it uses as much as digits as its factorization.

2109348621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22063 (or 22051 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2109348621 is about 45927.6454981093. The cubic root of 2109348621 is about 1282.4766139164.

The spelling of 2109348621 in words is "two billion, one hundred nine million, three hundred forty-eight thousand, six hundred twenty-one".