167980693 has 2 divisors, whose sum is σ = 167980694. Its totient is φ = 167980692.

The previous prime is 167980643. The next prime is 167980711. The reversal of 167980693 is 396089761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166487409 + 1493284 = 12903^2 + 1222^2 .

It is a cyclic number.

It is not a de Polignac number, because 167980693 - 2⁹ = 167980181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167980643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83990346 + 83990347.

It is an arithmetic number, because the mean of its divisors is an integer number (83990347).

Almost surely, 2^167980693 is an apocalyptic number.

It is an amenable number.

167980693 is a deficient number, since it is larger than the sum of its proper divisors (1).

167980693 is an equidigital number, since it uses as much as digits as its factorization.

167980693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 167980693 is about 12960.7365917219. The cubic root of 167980693 is about 551.7636969470.

The spelling of 167980693 in words is "one hundred sixty-seven million, nine hundred eighty thousand, six hundred ninety-three".