2618257457 has 2 divisors, whose sum is σ = 2618257458. Its totient is φ = 2618257456.

The previous prime is 2618257409. The next prime is 2618257469. The reversal of 2618257457 is 7547528162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1680918001 + 937339456 = 40999^2 + 30616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2618257457 is a prime.

It is a super-2 number, since 2×2618257457² = 13710544222272213698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2618257157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1309128728 + 1309128729.

It is an arithmetic number, because the mean of its divisors is an integer number (1309128729).

Almost surely, 2^2618257457 is an apocalyptic number.

It is an amenable number.

2618257457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2618257457 is an equidigital number, since it uses as much as digits as its factorization.

2618257457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 940800, while the sum is 47.

The square root of 2618257457 is about 51168.9110398101. The cubic root of 2618257457 is about 1378.2799856663.

The spelling of 2618257457 in words is "two billion, six hundred eighteen million, two hundred fifty-seven thousand, four hundred fifty-seven".