19248274393 has 4 divisors (see below), whose sum is σ = 19250627380. Its totient is φ = 19245921408.

The previous prime is 19248274379. The next prime is 19248274433. The reversal of 19248274393 is 39347284291.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10308950089 + 8939324304 = 101533^2 + 94548^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19248274393 is a prime.

It is a super-3 number, since 3×19248274393³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19248274393.

It is not an unprimeable number, because it can be changed into a prime (19248274363) 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, 1164180 + ... + 1180597.

It is an arithmetic number, because the mean of its divisors is an integer number (4812656845).

Almost surely, 2^19248274393 is an apocalyptic number.

It is an amenable number.

19248274393 is a deficient number, since it is larger than the sum of its proper divisors (2352987).

19248274393 is an equidigital number, since it uses as much as digits as its factorization.

19248274393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352986.

The product of its digits is 2612736, while the sum is 52.

The spelling of 19248274393 in words is "nineteen billion, two hundred forty-eight million, two hundred seventy-four thousand, three hundred ninety-three".