19382083257 has 4 divisors (see below), whose sum is σ = 25842777680. Its totient is φ = 12921388836.

The previous prime is 19382083243. The next prime is 19382083267. The reversal of 19382083257 is 75238028391.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 19382083257 - 2²⁰ = 19381034681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19382083267) 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, 3230347207 + ... + 3230347212.

It is an arithmetic number, because the mean of its divisors is an integer number (6460694420).

Almost surely, 2^19382083257 is an apocalyptic number.

It is an amenable number.

19382083257 is a deficient number, since it is larger than the sum of its proper divisors (6460694423).

19382083257 is an equidigital number, since it uses as much as digits as its factorization.

19382083257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6460694422.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 19382083257 in words is "nineteen billion, three hundred eighty-two million, eighty-three thousand, two hundred fifty-seven".