1373886638 has 16 divisors (see below), whose sum is σ = 2083015440. Its totient is φ = 679560000.

The previous prime is 1373886607. The next prime is 1373886641. The reversal of 1373886638 is 8366883731.

It is a self number, because there is not a number n which added to its sum of digits gives 1373886638.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 324938 + ... + 329138.

It is an arithmetic number, because the mean of its divisors is an integer number (130188465).

Almost surely, 2^1373886638 is an apocalyptic number.

1373886638 is a deficient number, since it is larger than the sum of its proper divisors (709128802).

1373886638 is a wasteful number, since it uses less digits than its factorization.

1373886638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5923.

The product of its digits is 3483648, while the sum is 53.

The square root of 1373886638 is about 37065.9768251155. The cubic root of 1373886638 is about 1111.6898315228.

The spelling of 1373886638 in words is "one billion, three hundred seventy-three million, eight hundred eighty-six thousand, six hundred thirty-eight".