1390000137638 has 16 divisors (see below), whose sum is σ = 2391917679360. Its totient is φ = 593449269576.

The previous prime is 1390000137607. The next prime is 1390000137649. The reversal of 1390000137638 is 8367310000931.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1390000137595 and 1390000137604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188752448 + ... + 188759811.

It is an arithmetic number, because the mean of its divisors is an integer number (149494854960).

Almost surely, 2^{1390000137638} is an apocalyptic number.

1390000137638 is a deficient number, since it is larger than the sum of its proper divisors (1001917541722).

1390000137638 is a wasteful number, since it uses less digits than its factorization.

1390000137638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377512531.

The product of its (nonzero) digits is 81648, while the sum is 41.

The spelling of 1390000137638 in words is "one trillion, three hundred ninety billion, one hundred thirty-seven thousand, six hundred thirty-eight".