478151693 has 2 divisors, whose sum is σ = 478151694. Its totient is φ = 478151692.

The previous prime is 478151599. The next prime is 478151711. The reversal of 478151693 is 396151874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425473129 + 52678564 = 20627^2 + 7258^2 .

It is a cyclic number.

It is not a de Polignac number, because 478151693 - 2⁸ = 478151437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478151593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239075846 + 239075847.

It is an arithmetic number, because the mean of its divisors is an integer number (239075847).

Almost surely, 2^478151693 is an apocalyptic number.

It is an amenable number.

478151693 is a deficient number, since it is larger than the sum of its proper divisors (1).

478151693 is an equidigital number, since it uses as much as digits as its factorization.

478151693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 478151693 is about 21866.6799720488. The cubic root of 478151693 is about 781.9672525713.

The spelling of 478151693 in words is "four hundred seventy-eight million, one hundred fifty-one thousand, six hundred ninety-three".