1938848155 has 12 divisors (see below), whose sum is σ = 2333784960. Its totient is φ = 1546314864.

The previous prime is 1938848117. The next prime is 1938848161. The reversal of 1938848155 is 5518488391.

It is not a de Polignac number, because 1938848155 - 2²³ = 1930459547 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672006 + ... + 674884.

It is an arithmetic number, because the mean of its divisors is an integer number (194482080).

Almost surely, 2^1938848155 is an apocalyptic number.

1938848155 is a deficient number, since it is larger than the sum of its proper divisors (394936805).

1938848155 is an frugal number, since it uses more digits than its factorization.

1938848155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3618 (or 3251 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 52.

The square root of 1938848155 is about 44032.3535028506. The cubic root of 1938848155 is about 1246.9468216199.

The spelling of 1938848155 in words is "one billion, nine hundred thirty-eight million, eight hundred forty-eight thousand, one hundred fifty-five".