2517138493 has 2 divisors, whose sum is σ = 2517138494. Its totient is φ = 2517138492.

The previous prime is 2517138479. The next prime is 2517138499. The reversal of 2517138493 is 3948317152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1923875044 + 593263449 = 43862^2 + 24357^2 .

It is a cyclic number.

It is not a de Polignac number, because 2517138493 - 2¹⁷ = 2517007421 is a prime.

It is a super-2 number, since 2×2517138493² = 12671972385884622098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2517138499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258569246 + 1258569247.

It is an arithmetic number, because the mean of its divisors is an integer number (1258569247).

Almost surely, 2^2517138493 is an apocalyptic number.

It is an amenable number.

2517138493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2517138493 is an equidigital number, since it uses as much as digits as its factorization.

2517138493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 2517138493 is about 50171.0922045753. The cubic root of 2517138493 is about 1360.3031498740.

The spelling of 2517138493 in words is "two billion, five hundred seventeen million, one hundred thirty-eight thousand, four hundred ninety-three".