981927953 has 2 divisors, whose sum is σ = 981927954. Its totient is φ = 981927952.

The previous prime is 981927913. The next prime is 981927971. The reversal of 981927953 is 359729189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 967396609 + 14531344 = 31103^2 + 3812^2 .

It is a cyclic number.

It is not a de Polignac number, because 981927953 - 2²² = 977733649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 981927895 and 981927904.

It is not a weakly prime, because it can be changed into another prime (981927913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490963976 + 490963977.

It is an arithmetic number, because the mean of its divisors is an integer number (490963977).

Almost surely, 2^981927953 is an apocalyptic number.

It is an amenable number.

981927953 is a deficient number, since it is larger than the sum of its proper divisors (1).

981927953 is an equidigital number, since it uses as much as digits as its factorization.

981927953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 53.

The square root of 981927953 is about 31335.7296548205. The cubic root of 981927953 is about 993.9393267798.

The spelling of 981927953 in words is "nine hundred eighty-one million, nine hundred twenty-seven thousand, nine hundred fifty-three".