1938453093 has 16 divisors (see below), whose sum is σ = 3022929600. Its totient is φ = 1224285840.

The previous prime is 1938453037. The next prime is 1938453109. The reversal of 1938453093 is 3903548391.

1938453093 is a `hidden beast` number, since 193 + 8 + 453 + 0 + 9 + 3 = 666.

It is not a de Polignac number, because 1938453093 - 2⁸ = 1938452837 is a prime.

It is a super-2 number, since 2×1938453093² = 7515200787522533298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938451093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1888818 + ... + 1889843.

It is an arithmetic number, because the mean of its divisors is an integer number (188933100).

Almost surely, 2^1938453093 is an apocalyptic number.

It is an amenable number.

1938453093 is a deficient number, since it is larger than the sum of its proper divisors (1084476507).

1938453093 is a wasteful number, since it uses less digits than its factorization.

1938453093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778689 (or 3778683 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 1938453093 is about 44027.8672320157. The cubic root of 1938453093 is about 1246.8621227456.

The spelling of 1938453093 in words is "one billion, nine hundred thirty-eight million, four hundred fifty-three thousand, ninety-three".