18950826247 has 2 divisors, whose sum is σ = 18950826248. Its totient is φ = 18950826246.

The previous prime is 18950826229. The next prime is 18950826319. The reversal of 18950826247 is 74262805981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18950826247 - 2²³ = 18942437639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18950826194 and 18950826203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18950826217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9475413123 + 9475413124.

It is an arithmetic number, because the mean of its divisors is an integer number (9475413124).

Almost surely, 2^18950826247 is an apocalyptic number.

18950826247 is a deficient number, since it is larger than the sum of its proper divisors (1).

18950826247 is an equidigital number, since it uses as much as digits as its factorization.

18950826247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 18950826247 in words is "eighteen billion, nine hundred fifty million, eight hundred twenty-six thousand, two hundred forty-seven".