18295011389 has 2 divisors, whose sum is σ = 18295011390. Its totient is φ = 18295011388.

The previous prime is 18295011337. The next prime is 18295011419. The reversal of 18295011389 is 98311059281.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18139510489 + 155500900 = 134683^2 + 12470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18295011389 is a prime.

It is a super-3 number, since 3×18295011389³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18295013389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9147505694 + 9147505695.

It is an arithmetic number, because the mean of its divisors is an integer number (9147505695).

Almost surely, 2^18295011389 is an apocalyptic number.

It is an amenable number.

18295011389 is a deficient number, since it is larger than the sum of its proper divisors (1).

18295011389 is an equidigital number, since it uses as much as digits as its factorization.

18295011389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 47.

The spelling of 18295011389 in words is "eighteen billion, two hundred ninety-five million, eleven thousand, three hundred eighty-nine".