1938430194 has 16 divisors (see below), whose sum is σ = 3878981568. Its totient is φ = 645789872.

The previous prime is 1938430183. The next prime is 1938430213. The reversal of 1938430194 is 4910348391.

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, 76377 + ... + 98540.

It is an arithmetic number, because the mean of its divisors is an integer number (242436348).

Almost surely, 2^1938430194 is an apocalyptic number.

1938430194 is an abundant number, since it is smaller than the sum of its proper divisors (1940551374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1938430194 is a wasteful number, since it uses less digits than its factorization.

1938430194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176769.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 1938430194 is about 44027.6071800410. The cubic root of 1938430194 is about 1246.8572129874.

The spelling of 1938430194 in words is "one billion, nine hundred thirty-eight million, four hundred thirty thousand, one hundred ninety-four".