981953267 has 2 divisors, whose sum is σ = 981953268. Its totient is φ = 981953266.

The previous prime is 981953263. The next prime is 981953293. The reversal of 981953267 is 762359189.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 981953267 - 2² = 981953263 is a prime.

It is not a weakly prime, because it can be changed into another prime (981953263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490976633 + 490976634.

It is an arithmetic number, because the mean of its divisors is an integer number (490976634).

Almost surely, 2^981953267 is an apocalyptic number.

981953267 is a deficient number, since it is larger than the sum of its proper divisors (1).

981953267 is an equidigital number, since it uses as much as digits as its factorization.

981953267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 50.

The square root of 981953267 is about 31336.1335681350. The cubic root of 981953267 is about 993.9478679238.

The spelling of 981953267 in words is "nine hundred eighty-one million, nine hundred fifty-three thousand, two hundred sixty-seven".