19948123 has 8 divisors (see below), whose sum is σ = 22746528. Its totient is φ = 17330304.

The previous prime is 19948121. The next prime is 19948129. The reversal of 19948123 is 32184991.

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

It is a cyclic number.

It is not a de Polignac number, because 19948123 - 2¹ = 19948121 is a prime.

It is a super-2 number, since 2×19948123² = 795855222446258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19948121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44911 + ... + 45352.

It is an arithmetic number, because the mean of its divisors is an integer number (2843316).

Almost surely, 2^19948123 is an apocalyptic number.

19948123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

19948123 is a deficient number, since it is larger than the sum of its proper divisors (2798405).

19948123 is a wasteful number, since it uses less digits than its factorization.

19948123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90293.

The product of its digits is 15552, while the sum is 37.

The square root of 19948123 is about 4466.3321640917. The cubic root of 19948123 is about 271.2068653759.

The spelling of 19948123 in words is "nineteen million, nine hundred forty-eight thousand, one hundred twenty-three".