1938689476 has 12 divisors (see below), whose sum is σ = 3394137600. Its totient is φ = 968935880.

The previous prime is 1938689471. The next prime is 1938689479. The reversal of 1938689476 is 6749868391.

It is not an unprimeable number, because it can be changed into a prime (1938689471) 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, 91420 + ... + 110611.

It is an arithmetic number, because the mean of its divisors is an integer number (282844800).

Almost surely, 2^1938689476 is an apocalyptic number.

It is an amenable number.

1938689476 is a deficient number, since it is larger than the sum of its proper divisors (1455448124).

1938689476 is a wasteful number, since it uses less digits than its factorization.

1938689476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204434 (or 204432 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 61.

The square root of 1938689476 is about 44030.5516204374. The cubic root of 1938689476 is about 1246.9128031964.

The spelling of 1938689476 in words is "one billion, nine hundred thirty-eight million, six hundred eighty-nine thousand, four hundred seventy-six".