18848023951 has 4 divisors (see below), whose sum is σ = 18850474072. Its totient is φ = 18845573832.

The previous prime is 18848023937. The next prime is 18848023993. The reversal of 18848023951 is 15932084881.

It is a happy number.

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 18848023951 - 2²⁹ = 18311153039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18848023895 and 18848023904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18848023651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213485 + ... + 1228918.

It is an arithmetic number, because the mean of its divisors is an integer number (4712618518).

Almost surely, 2^18848023951 is an apocalyptic number.

18848023951 is a deficient number, since it is larger than the sum of its proper divisors (2450121).

18848023951 is an equidigital number, since it uses as much as digits as its factorization.

18848023951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450120.

The product of its (nonzero) digits is 552960, while the sum is 49.

The spelling of 18848023951 in words is "eighteen billion, eight hundred forty-eight million, twenty-three thousand, nine hundred fifty-one".