1993448923 has 4 divisors (see below), whose sum is σ = 2023201960. Its totient is φ = 1963695888.

The previous prime is 1993448921. The next prime is 1993448927. The reversal of 1993448923 is 3298443991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3298443991 = 20981 ⋅157211.

It is a cyclic number.

It is not a de Polignac number, because 1993448923 - 2¹ = 1993448921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1993448921) 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, 14876418 + ... + 14876551.

It is an arithmetic number, because the mean of its divisors is an integer number (505800490).

Almost surely, 2^1993448923 is an apocalyptic number.

1993448923 is a deficient number, since it is larger than the sum of its proper divisors (29753037).

1993448923 is an equidigital number, since it uses as much as digits as its factorization.

1993448923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29753036.

The product of its digits is 1679616, while the sum is 52.

The square root of 1993448923 is about 44648.0562062897. The cubic root of 1993448923 is about 1258.5439051998.

The spelling of 1993448923 in words is "one billion, nine hundred ninety-three million, four hundred forty-eight thousand, nine hundred twenty-three".