978974167 has 2 divisors, whose sum is σ = 978974168. Its totient is φ = 978974166.

The previous prime is 978974159. The next prime is 978974201. The reversal of 978974167 is 761479879.

It is a weak prime.

It is an emirp because it is prime and its reverse (761479879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 978974167 - 2³ = 978974159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978974147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489487083 + 489487084.

It is an arithmetic number, because the mean of its divisors is an integer number (489487084).

Almost surely, 2^978974167 is an apocalyptic number.

978974167 is a deficient number, since it is larger than the sum of its proper divisors (1).

978974167 is an equidigital number, since it uses as much as digits as its factorization.

978974167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5334336, while the sum is 58.

The square root of 978974167 is about 31288.5628784705. The cubic root of 978974167 is about 992.9416864240.

The spelling of 978974167 in words is "nine hundred seventy-eight million, nine hundred seventy-four thousand, one hundred sixty-seven".