981356741 has 2 divisors, whose sum is σ = 981356742. Its totient is φ = 981356740.

The previous prime is 981356737. The next prime is 981356791. The reversal of 981356741 is 147653189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 943779841 + 37576900 = 30721^2 + 6130^2 .

It is a cyclic number.

It is not a de Polignac number, because 981356741 - 2² = 981356737 is a prime.

It is a super-2 number, since 2×981356741² = 1926122106212282162, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 981356692 and 981356701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981356711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490678370 + 490678371.

It is an arithmetic number, because the mean of its divisors is an integer number (490678371).

Almost surely, 2^981356741 is an apocalyptic number.

It is an amenable number.

981356741 is a deficient number, since it is larger than the sum of its proper divisors (1).

981356741 is an equidigital number, since it uses as much as digits as its factorization.

981356741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 981356741 is about 31326.6139408650. The cubic root of 981356741 is about 993.7465562899.

The spelling of 981356741 in words is "nine hundred eighty-one million, three hundred fifty-six thousand, seven hundred forty-one".