1390938194854 has 8 divisors (see below), whose sum is σ = 2246900160960. Its totient is φ = 641971474536.

The previous prime is 1390938194851. The next prime is 1390938194861. The reversal of 1390938194854 is 4584918390931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390938194851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26748811414 + ... + 26748811465.

It is an arithmetic number, because the mean of its divisors is an integer number (280862520120).

Almost surely, 2^{1390938194854} is an apocalyptic number.

1390938194854 is a deficient number, since it is larger than the sum of its proper divisors (855961966106).

1390938194854 is a wasteful number, since it uses less digits than its factorization.

1390938194854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53497622894.

The product of its (nonzero) digits is 33592320, while the sum is 64.

The spelling of 1390938194854 in words is "one trillion, three hundred ninety billion, nine hundred thirty-eight million, one hundred ninety-four thousand, eight hundred fifty-four".