1257631483738 has 16 divisors (see below), whose sum is σ = 2155954834944. Its totient is φ = 538981134480.

The previous prime is 1257631483727. The next prime is 1257631483739. The reversal of 1257631483738 is 8373841367521.

It is not an unprimeable number, because it can be changed into a prime (1257631483739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2827383 + ... + 3241813.

It is an arithmetic number, because the mean of its divisors is an integer number (134747177184).

Almost surely, 2^{1257631483738} is an apocalyptic number.

1257631483738 is a deficient number, since it is larger than the sum of its proper divisors (898323351206).

1257631483738 is a wasteful number, since it uses less digits than its factorization.

1257631483738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631197.

The product of its digits is 20321280, while the sum is 58.

The spelling of 1257631483738 in words is "one trillion, two hundred fifty-seven billion, six hundred thirty-one million, four hundred eighty-three thousand, seven hundred thirty-eight".