164523427 has 2 divisors, whose sum is σ = 164523428. Its totient is φ = 164523426.

The previous prime is 164523419. The next prime is 164523431. The reversal of 164523427 is 724325461.

It is a strong prime.

It is an emirp because it is prime and its reverse (724325461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164523427 - 2³ = 164523419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164523392 and 164523401.

It is not a weakly prime, because it can be changed into another prime (164523407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82261713 + 82261714.

It is an arithmetic number, because the mean of its divisors is an integer number (82261714).

Almost surely, 2^164523427 is an apocalyptic number.

164523427 is a deficient number, since it is larger than the sum of its proper divisors (1).

164523427 is an equidigital number, since it uses as much as digits as its factorization.

164523427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 34.

The square root of 164523427 is about 12826.6685854122. The cubic root of 164523427 is about 547.9520832506.

Adding to 164523427 its reverse (724325461), we get a palindrome (888848888).

The spelling of 164523427 in words is "one hundred sixty-four million, five hundred twenty-three thousand, four hundred twenty-seven".