1390943194 has 8 divisors (see below), whose sum is σ = 2095145280. Its totient is φ = 692561436.

The previous prime is 1390943173. The next prime is 1390943201. The reversal of 1390943194 is 4913490931.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1390943194.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1454484 + ... + 1455439.

It is an arithmetic number, because the mean of its divisors is an integer number (261893160).

Almost surely, 2^1390943194 is an apocalyptic number.

1390943194 is a deficient number, since it is larger than the sum of its proper divisors (704202086).

1390943194 is a wasteful number, since it uses less digits than its factorization.

1390943194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910164.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 1390943194 is about 37295.3508362638. The cubic root of 1390943194 is about 1116.2714002937.

The spelling of 1390943194 in words is "one billion, three hundred ninety million, nine hundred forty-three thousand, one hundred ninety-four".