18950013293 has 2 divisors, whose sum is σ = 18950013294. Its totient is φ = 18950013292.

The previous prime is 18950013287. The next prime is 18950013323. The reversal of 18950013293 is 39231005981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18160796644 + 789216649 = 134762^2 + 28093^2 .

It is an emirp because it is prime and its reverse (39231005981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18950013293 - 2⁸ = 18950013037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18950013293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18950013493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9475006646 + 9475006647.

It is an arithmetic number, because the mean of its divisors is an integer number (9475006647).

Almost surely, 2^18950013293 is an apocalyptic number.

It is an amenable number.

18950013293 is a deficient number, since it is larger than the sum of its proper divisors (1).

18950013293 is an equidigital number, since it uses as much as digits as its factorization.

18950013293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 41.

The spelling of 18950013293 in words is "eighteen billion, nine hundred fifty million, thirteen thousand, two hundred ninety-three".