981734749 has 2 divisors, whose sum is σ = 981734750. Its totient is φ = 981734748.

The previous prime is 981734723. The next prime is 981734759. The reversal of 981734749 is 947437189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 922336900 + 59397849 = 30370^2 + 7707^2 .

It is a cyclic number.

It is not a de Polignac number, because 981734749 - 2¹¹ = 981732701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 981734696 and 981734705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981734759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490867374 + 490867375.

It is an arithmetic number, because the mean of its divisors is an integer number (490867375).

Almost surely, 2^981734749 is an apocalyptic number.

It is an amenable number.

981734749 is a deficient number, since it is larger than the sum of its proper divisors (1).

981734749 is an equidigital number, since it uses as much as digits as its factorization.

981734749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 52.

The square root of 981734749 is about 31332.6466963772. The cubic root of 981734749 is about 993.8741333851.

The spelling of 981734749 in words is "nine hundred eighty-one million, seven hundred thirty-four thousand, seven hundred forty-nine".