19930263245 has 4 divisors (see below), whose sum is σ = 23916315900. Its totient is φ = 15944210592.

The previous prime is 19930263233. The next prime is 19930263251. The reversal of 19930263245 is 54236203991.

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 15782645641 + 4147617604 = 125629^2 + 64402^2 .

It is a cyclic number.

It is not a de Polignac number, because 19930263245 - 2⁴ = 19930263229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19930263196 and 19930263205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1993026320 + ... + 1993026329.

It is an arithmetic number, because the mean of its divisors is an integer number (5979078975).

Almost surely, 2^19930263245 is an apocalyptic number.

It is an amenable number.

19930263245 is a deficient number, since it is larger than the sum of its proper divisors (3986052655).

19930263245 is an equidigital number, since it uses as much as digits as its factorization.

19930263245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986052654.

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 19930263245 in words is "nineteen billion, nine hundred thirty million, two hundred sixty-three thousand, two hundred forty-five".