1938699223 has 4 divisors (see below), whose sum is σ = 1939181848. Its totient is φ = 1938216600.

The previous prime is 1938699211. The next prime is 1938699229. The reversal of 1938699223 is 3229968391.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1938699223 - 2⁹ = 1938698711 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 (1938699229) 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 3 ways as a sum of consecutive naturals, for example, 235236 + ... + 243337.

It is an arithmetic number, because the mean of its divisors is an integer number (484795462).

Almost surely, 2^1938699223 is an apocalyptic number.

1938699223 is a deficient number, since it is larger than the sum of its proper divisors (482625).

1938699223 is an equidigital number, since it uses as much as digits as its factorization.

1938699223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482624.

The product of its digits is 1259712, while the sum is 52.

The square root of 1938699223 is about 44030.6623048075. The cubic root of 1938699223 is about 1246.9148928621.

The spelling of 1938699223 in words is "one billion, nine hundred thirty-eight million, six hundred ninety-nine thousand, two hundred twenty-three".