1938631748 has 24 divisors (see below), whose sum is σ = 3576566784. Its totient is φ = 918086400.

The previous prime is 1938631679. The next prime is 1938631763. The reversal of 1938631748 is 8471368391.

It is a junction number, because it is equal to n+sod(n) for n = 1938631696 and 1938631705.

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, 160493 + ... + 172148.

It is an arithmetic number, because the mean of its divisors is an integer number (149023616).

Almost surely, 2^1938631748 is an apocalyptic number.

It is an amenable number.

1938631748 is a deficient number, since it is larger than the sum of its proper divisors (1637935036).

1938631748 is a wasteful number, since it uses less digits than its factorization.

1938631748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332723 (or 332721 counting only the distinct ones).

The product of its digits is 870912, while the sum is 50.

The square root of 1938631748 is about 44029.8960707381. The cubic root of 1938631748 is about 1246.9004267091.

The spelling of 1938631748 in words is "one billion, nine hundred thirty-eight million, six hundred thirty-one thousand, seven hundred forty-eight".