5649628157 has 2 divisors, whose sum is σ = 5649628158. Its totient is φ = 5649628156.

The previous prime is 5649628111. The next prime is 5649628181. The reversal of 5649628157 is 7518269465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4343600836 + 1306027321 = 65906^2 + 36139^2 .

It is a cyclic number.

It is not a de Polignac number, because 5649628157 - 2¹⁰ = 5649627133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5649628099 and 5649628108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5643628157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2824814078 + 2824814079.

It is an arithmetic number, because the mean of its divisors is an integer number (2824814079).

Almost surely, 2^5649628157 is an apocalyptic number.

It is an amenable number.

5649628157 is a deficient number, since it is larger than the sum of its proper divisors (1).

5649628157 is an equidigital number, since it uses as much as digits as its factorization.

5649628157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 53.

The square root of 5649628157 is about 75164.0083883237. The cubic root of 5649628157 is about 1781.0384208289.

The spelling of 5649628157 in words is "five billion, six hundred forty-nine million, six hundred twenty-eight thousand, one hundred fifty-seven".