1938275723 has 16 divisors (see below), whose sum is σ = 2102298624. Its totient is φ = 1780045440.

The previous prime is 1938275699. The next prime is 1938275737. The reversal of 1938275723 is 3275728391.

It is a cyclic number.

It is not a de Polignac number, because 1938275723 - 2¹² = 1938271627 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1938275743) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 273758 + ... + 280748.

It is an arithmetic number, because the mean of its divisors is an integer number (131393664).

Almost surely, 2^1938275723 is an apocalyptic number.

1938275723 is a deficient number, since it is larger than the sum of its proper divisors (164022901).

1938275723 is a wasteful number, since it uses less digits than its factorization.

1938275723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7402.

The product of its digits is 635040, while the sum is 47.

The square root of 1938275723 is about 44025.8528934988. The cubic root of 1938275723 is about 1246.8240919603.

The spelling of 1938275723 in words is "one billion, nine hundred thirty-eight million, two hundred seventy-five thousand, seven hundred twenty-three".