1938293939093 has 4 divisors (see below), whose sum is σ = 1941365720928. Its totient is φ = 1935222157260.

The previous prime is 1938293939083. The next prime is 1938293939147. The reversal of 1938293939093 is 3909393928391.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1938293939093 - 2¹⁶ = 1938293873557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938293939003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1535889971 + ... + 1535891232.

It is an arithmetic number, because the mean of its divisors is an integer number (485341430232).

Almost surely, 2^{1938293939093} is an apocalyptic number.

It is an amenable number.

1938293939093 is a deficient number, since it is larger than the sum of its proper divisors (3071781835).

1938293939093 is an equidigital number, since it uses as much as digits as its factorization.

1938293939093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3071781834.

The product of its (nonzero) digits is 76527504, while the sum is 68.

The spelling of 1938293939093 in words is "one trillion, nine hundred thirty-eight billion, two hundred ninety-three million, nine hundred thirty-nine thousand, ninety-three".