197459793631 has 2 divisors, whose sum is σ = 197459793632. Its totient is φ = 197459793630.

The previous prime is 197459793613. The next prime is 197459793649. The reversal of 197459793631 is 136397954791.

Together with previous prime (197459793613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (197459793613) and next prime (197459793649).

It is a cyclic number.

It is not a de Polignac number, because 197459793631 - 2¹¹ = 197459791583 is a prime.

It is a super-2 number, since 2×197459793631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197456793631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98729896815 + 98729896816.

It is an arithmetic number, because the mean of its divisors is an integer number (98729896816).

Almost surely, 2^197459793631 is an apocalyptic number.

197459793631 is a deficient number, since it is larger than the sum of its proper divisors (1).

197459793631 is an equidigital number, since it uses as much as digits as its factorization.

197459793631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38578680, while the sum is 64.

The spelling of 197459793631 in words is "one hundred ninety-seven billion, four hundred fifty-nine million, seven hundred ninety-three thousand, six hundred thirty-one".