1257631483739 has 2 divisors, whose sum is σ = 1257631483740. Its totient is φ = 1257631483738.

The previous prime is 1257631483727. The next prime is 1257631483751. The reversal of 1257631483739 is 9373841367521.

It is a balanced prime because it is at equal distance from previous prime (1257631483727) and next prime (1257631483751).

It is a cyclic number.

It is not a de Polignac number, because 1257631483739 - 2¹⁶ = 1257631418203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1257631483939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628815741869 + 628815741870.

It is an arithmetic number, because the mean of its divisors is an integer number (628815741870).

Almost surely, 2^{1257631483739} is an apocalyptic number.

1257631483739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1257631483739 is an equidigital number, since it uses as much as digits as its factorization.

1257631483739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22861440, while the sum is 59.

The spelling of 1257631483739 in words is "one trillion, two hundred fifty-seven billion, six hundred thirty-one million, four hundred eighty-three thousand, seven hundred thirty-nine".