2038315561 has 2 divisors, whose sum is σ = 2038315562. Its totient is φ = 2038315560.

The previous prime is 2038315523. The next prime is 2038315571. The reversal of 2038315561 is 1655138302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1198475161 + 839840400 = 34619^2 + 28980^2 .

It is a cyclic number.

It is not a de Polignac number, because 2038315561 - 2⁹ = 2038315049 is a prime.

It is not a weakly prime, because it can be changed into another prime (2038315511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1019157780 + 1019157781.

It is an arithmetic number, because the mean of its divisors is an integer number (1019157781).

Almost surely, 2^2038315561 is an apocalyptic number.

It is an amenable number.

2038315561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2038315561 is an equidigital number, since it uses as much as digits as its factorization.

2038315561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 2038315561 is about 45147.7082585595. The cubic root of 2038315561 is about 1267.9159738344.

The spelling of 2038315561 in words is "two billion, thirty-eight million, three hundred fifteen thousand, five hundred sixty-one".