2620002157 has 2 divisors, whose sum is σ = 2620002158. Its totient is φ = 2620002156.

The previous prime is 2620002149. The next prime is 2620002167. The reversal of 2620002157 is 7512000262.

2620002157 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., 2230295076 + 389707081 = 47226^2 + 19741^2 .

It is a cyclic number.

It is not a de Polignac number, because 2620002157 - 2³ = 2620002149 is a prime.

It is a super-2 number, since 2×2620002157² = 13728822605369305298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2620002127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310001078 + 1310001079.

It is an arithmetic number, because the mean of its divisors is an integer number (1310001079).

Almost surely, 2^2620002157 is an apocalyptic number.

It is an amenable number.

2620002157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2620002157 is an equidigital number, since it uses as much as digits as its factorization.

2620002157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2620002157 is about 51185.9566385156. The cubic root of 2620002157 is about 1378.5860608836.

The spelling of 2620002157 in words is "two billion, six hundred twenty million, two thousand, one hundred fifty-seven".