1257381483394 has 48 divisors (see below), whose sum is σ = 1987675653600. Its totient is φ = 596358186368.

The previous prime is 1257381483359. The next prime is 1257381483401. The reversal of 1257381483394 is 4933841837521.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 232114974 + ... + 232120390.

It is an arithmetic number, because the mean of its divisors is an integer number (41409909450).

Almost surely, 2^{1257381483394} is an apocalyptic number.

1257381483394 is a deficient number, since it is larger than the sum of its proper divisors (730294170206).

1257381483394 is a wasteful number, since it uses less digits than its factorization.

1257381483394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7875 (or 7846 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 58.

The spelling of 1257381483394 in words is "one trillion, two hundred fifty-seven billion, three hundred eighty-one million, four hundred eighty-three thousand, three hundred ninety-four".