2159000621 has 2 divisors, whose sum is σ = 2159000622. Its totient is φ = 2159000620.

The previous prime is 2159000617. The next prime is 2159000659. The reversal of 2159000621 is 1260009512.

2159000621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1822094596 + 336906025 = 42686^2 + 18355^2 .

It is a cyclic number.

It is not a de Polignac number, because 2159000621 - 2² = 2159000617 is a prime.

It is a super-2 number, since 2×2159000621² = 9322567362956771282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2159000521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079500310 + 1079500311.

It is an arithmetic number, because the mean of its divisors is an integer number (1079500311).

Almost surely, 2^2159000621 is an apocalyptic number.

It is an amenable number.

2159000621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159000621 is an equidigital number, since it uses as much as digits as its factorization.

2159000621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 2159000621 is about 46465.0473043986. The cubic root of 2159000621 is about 1292.4614224512.

The spelling of 2159000621 in words is "two billion, one hundred fifty-nine million, six hundred twenty-one", and thus it is an aban number.