1388381374 has 4 divisors (see below), whose sum is σ = 2082572064. Its totient is φ = 694190686.

The previous prime is 1388381341. The next prime is 1388381431. The reversal of 1388381374 is 4731838831.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347095342 + ... + 347095345.

It is an arithmetic number, because the mean of its divisors is an integer number (520643016).

Almost surely, 2^1388381374 is an apocalyptic number.

1388381374 is a deficient number, since it is larger than the sum of its proper divisors (694190690).

1388381374 is an equidigital number, since it uses as much as digits as its factorization.

1388381374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694190689.

The product of its digits is 387072, while the sum is 46.

The square root of 1388381374 is about 37260.9899761131. The cubic root of 1388381374 is about 1115.5856680382.

The spelling of 1388381374 in words is "one billion, three hundred eighty-eight million, three hundred eighty-one thousand, three hundred seventy-four".