1382638881194 has 4 divisors (see below), whose sum is σ = 2073958321794. Its totient is φ = 691319440596.

The previous prime is 1382638881193. The next prime is 1382638881203. The reversal of 1382638881194 is 4911888362831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 772579471225 + 610059409969 = 878965^2 + 781063^2 .

It is not an unprimeable number, because it can be changed into a prime (1382638881193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345659720297 + ... + 345659720300.

Almost surely, 2^{1382638881194} is an apocalyptic number.

1382638881194 is a deficient number, since it is larger than the sum of its proper divisors (691319440600).

1382638881194 is an equidigital number, since it uses as much as digits as its factorization.

1382638881194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691319440599.

The product of its digits is 15925248, while the sum is 62.

The spelling of 1382638881194 in words is "one trillion, three hundred eighty-two billion, six hundred thirty-eight million, eight hundred eighty-one thousand, one hundred ninety-four".