981418727 has 2 divisors, whose sum is σ = 981418728. Its totient is φ = 981418726.

The previous prime is 981418663. The next prime is 981418741. The reversal of 981418727 is 727814189.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 981418727 - 2⁶ = 981418663 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981468727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490709363 + 490709364.

It is an arithmetic number, because the mean of its divisors is an integer number (490709364).

Almost surely, 2^981418727 is an apocalyptic number.

981418727 is a deficient number, since it is larger than the sum of its proper divisors (1).

981418727 is an equidigital number, since it uses as much as digits as its factorization.

981418727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 47.

The square root of 981418727 is about 31327.6032757056. The cubic root of 981418727 is about 993.7674787111.

The spelling of 981418727 in words is "nine hundred eighty-one million, four hundred eighteen thousand, seven hundred twenty-seven".