1938426044 has 24 divisors (see below), whose sum is σ = 3526868688. Its totient is φ = 931455360.

The previous prime is 1938426043. The next prime is 1938426047. The reversal of 1938426044 is 4406248391.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 1938425992 and 1938426010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938426043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77219 + ... + 99194.

It is an arithmetic number, because the mean of its divisors is an integer number (146952862).

Almost surely, 2^1938426044 is an apocalyptic number.

It is an amenable number.

1938426044 is a deficient number, since it is larger than the sum of its proper divisors (1588442644).

1938426044 is a wasteful number, since it uses less digits than its factorization.

1938426044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176525 (or 176523 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 1938426044 is about 44027.5600504956. The cubic root of 1938426044 is about 1246.8563231847.

The spelling of 1938426044 in words is "one billion, nine hundred thirty-eight million, four hundred twenty-six thousand, forty-four".