981212753 has 2 divisors, whose sum is σ = 981212754. Its totient is φ = 981212752.

The previous prime is 981212719. The next prime is 981212809. The reversal of 981212753 is 357212189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 813846784 + 167365969 = 28528^2 + 12937^2 .

It is a cyclic number.

It is not a de Polignac number, because 981212753 - 2⁶ = 981212689 is a prime.

It is not a weakly prime, because it can be changed into another prime (981218753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490606376 + 490606377.

It is an arithmetic number, because the mean of its divisors is an integer number (490606377).

Almost surely, 2^981212753 is an apocalyptic number.

It is an amenable number.

981212753 is a deficient number, since it is larger than the sum of its proper divisors (1).

981212753 is an equidigital number, since it uses as much as digits as its factorization.

981212753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 981212753 is about 31324.3156828685. The cubic root of 981212753 is about 993.6979519541.

The spelling of 981212753 in words is "nine hundred eighty-one million, two hundred twelve thousand, seven hundred fifty-three".