1938513148 has 72 divisors (see below), whose sum is σ = 4047878016. Its totient is φ = 805147200.

The previous prime is 1938513131. The next prime is 1938513217. The reversal of 1938513148 is 8413158391.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 764643 + ... + 767173.

It is an arithmetic number, because the mean of its divisors is an integer number (56220528).

Almost surely, 2^1938513148 is an apocalyptic number.

It is an amenable number.

1938513148 is an abundant number, since it is smaller than the sum of its proper divisors (2109364868).

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

1938513148 is a wasteful number, since it uses less digits than its factorization.

1938513148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675 (or 2660 counting only the distinct ones).

The product of its digits is 103680, while the sum is 43.

The square root of 1938513148 is about 44028.5492379660. The cubic root of 1938513148 is about 1246.8749989116.

The spelling of 1938513148 in words is "one billion, nine hundred thirty-eight million, five hundred thirteen thousand, one hundred forty-eight".