18072350693 has 2 divisors, whose sum is σ = 18072350694. Its totient is φ = 18072350692.

The previous prime is 18072350663. The next prime is 18072350719. The reversal of 18072350693 is 39605327081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16409097604 + 1663253089 = 128098^2 + 40783^2 .

It is a cyclic number.

It is not a de Polignac number, because 18072350693 - 2¹⁸ = 18072088549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18072350603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9036175346 + 9036175347.

It is an arithmetic number, because the mean of its divisors is an integer number (9036175347).

Almost surely, 2^18072350693 is an apocalyptic number.

It is an amenable number.

18072350693 is a deficient number, since it is larger than the sum of its proper divisors (1).

18072350693 is an equidigital number, since it uses as much as digits as its factorization.

18072350693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 18072350693 in words is "eighteen billion, seventy-two million, three hundred fifty thousand, six hundred ninety-three".