18401069 has 2 divisors, whose sum is σ = 18401070. Its totient is φ = 18401068.

The previous prime is 18401059. The next prime is 18401083. The reversal of 18401069 is 96010481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17952169 + 448900 = 4237^2 + 670^2 .

It is a cyclic number.

It is not a de Polignac number, because 18401069 - 2²⁰ = 17352493 is a prime.

It is a super-2 number, since 2×18401069² = 677198680685522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18401029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9200534 + 9200535.

It is an arithmetic number, because the mean of its divisors is an integer number (9200535).

Almost surely, 2^18401069 is an apocalyptic number.

It is an amenable number.

18401069 is a deficient number, since it is larger than the sum of its proper divisors (1).

18401069 is an equidigital number, since it uses as much as digits as its factorization.

18401069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 18401069 is about 4289.6467220507. The cubic root of 18401069 is about 264.0063368926.

The spelling of 18401069 in words is "eighteen million, four hundred one thousand, sixty-nine".