1938161093 has 8 divisors (see below), whose sum is σ = 2114786880. Its totient is φ = 1761606880.

The previous prime is 1938161087. The next prime is 1938161107. The reversal of 1938161093 is 3901618391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1938161093 - 2⁴ = 1938161077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1938161093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938161593) 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 7 ways as a sum of consecutive naturals, for example, 49928 + ... + 79806.

It is an arithmetic number, because the mean of its divisors is an integer number (264348360).

Almost surely, 2^1938161093 is an apocalyptic number.

It is an amenable number.

1938161093 is a deficient number, since it is larger than the sum of its proper divisors (176625787).

1938161093 is a wasteful number, since it uses less digits than its factorization.

1938161093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35787.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 1938161093 is about 44024.5510255357. The cubic root of 1938161093 is about 1246.7995123367.

The spelling of 1938161093 in words is "one billion, nine hundred thirty-eight million, one hundred sixty-one thousand, ninety-three".