1845726979 has 2 divisors, whose sum is σ = 1845726980. Its totient is φ = 1845726978.

The previous prime is 1845726943. The next prime is 1845726997. The reversal of 1845726979 is 9796275481.

Together with next prime (1845726997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1845726979 - 2⁷ = 1845726851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1846726979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922863489 + 922863490.

It is an arithmetic number, because the mean of its divisors is an integer number (922863490).

Almost surely, 2^1845726979 is an apocalyptic number.

1845726979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1845726979 is an equidigital number, since it uses as much as digits as its factorization.

1845726979 is an evil number, because the sum of its binary digits is even.

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

The square root of 1845726979 is about 42961.9247590235. The cubic root of 1845726979 is about 1226.6551507350.

The spelling of 1845726979 in words is "one billion, eight hundred forty-five million, seven hundred twenty-six thousand, nine hundred seventy-nine".