19426925231 has 8 divisors (see below), whose sum is σ = 23370737280. Its totient is φ = 15775247448.

The previous prime is 19426925191. The next prime is 19426925249. The reversal of 19426925231 is 13252962491.

It is a happy number.

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 19426925231 - 2²² = 19422730927 is a prime.

It is a super-2 number, since 2×19426925231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19426925281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73033421 + ... + 73033686.

It is an arithmetic number, because the mean of its divisors is an integer number (2921342160).

Almost surely, 2^19426925231 is an apocalyptic number.

19426925231 is a deficient number, since it is larger than the sum of its proper divisors (3943812049).

19426925231 is a wasteful number, since it uses less digits than its factorization.

19426925231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146067133.

The product of its digits is 233280, while the sum is 44.

The spelling of 19426925231 in words is "nineteen billion, four hundred twenty-six million, nine hundred twenty-five thousand, two hundred thirty-one".