163426057 has 2 divisors, whose sum is σ = 163426058. Its totient is φ = 163426056.

The previous prime is 163426019. The next prime is 163426061. The reversal of 163426057 is 750624361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140280336 + 23145721 = 11844^2 + 4811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163426057 is a prime.

It is a super-2 number, since 2×163426057² = 53416152213134498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (163426357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81713028 + 81713029.

It is an arithmetic number, because the mean of its divisors is an integer number (81713029).

Almost surely, 2^163426057 is an apocalyptic number.

It is an amenable number.

163426057 is a deficient number, since it is larger than the sum of its proper divisors (1).

163426057 is an equidigital number, since it uses as much as digits as its factorization.

163426057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 163426057 is about 12783.8201254555. The cubic root of 163426057 is about 546.7310857971.

The spelling of 163426057 in words is "one hundred sixty-three million, four hundred twenty-six thousand, fifty-seven".