1845726997 has 2 divisors, whose sum is σ = 1845726998. Its totient is φ = 1845726996.

The previous prime is 1845726979. The next prime is 1845727019. The reversal of 1845726997 is 7996275481.

Together with previous prime (1845726979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1699583076 + 146143921 = 41226^2 + 12089^2 .

It is a cyclic number.

It is not a de Polignac number, because 1845726997 - 2¹⁵ = 1845694229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1845726097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922863498 + 922863499.

It is an arithmetic number, because the mean of its divisors is an integer number (922863499).

Almost surely, 2^1845726997 is an apocalyptic number.

It is an amenable number.

1845726997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1845726997 is an equidigital number, since it uses as much as digits as its factorization.

1845726997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 58.

The square root of 1845726997 is about 42961.9249685114. The cubic root of 1845726997 is about 1226.6551547226.

It can be divided in two parts, 18457 and 26997, that added together give a palindrome (45454).

The spelling of 1845726997 in words is "one billion, eight hundred forty-five million, seven hundred twenty-six thousand, nine hundred ninety-seven".