974187971 has 2 divisors, whose sum is σ = 974187972. Its totient is φ = 974187970.

The previous prime is 974187967. The next prime is 974188013. The reversal of 974187971 is 179781479.

It is a happy number.

974187971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 974187971 - 2² = 974187967 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (974187961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487093985 + 487093986.

It is an arithmetic number, because the mean of its divisors is an integer number (487093986).

Almost surely, 2^974187971 is an apocalyptic number.

974187971 is a deficient number, since it is larger than the sum of its proper divisors (1).

974187971 is an equidigital number, since it uses as much as digits as its factorization.

974187971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 53.

The square root of 974187971 is about 31211.9844130424. The cubic root of 974187971 is about 991.3208811537.

The spelling of 974187971 in words is "nine hundred seventy-four million, one hundred eighty-seven thousand, nine hundred seventy-one".