164237401 has 2 divisors, whose sum is σ = 164237402. Its totient is φ = 164237400.

The previous prime is 164237399. The next prime is 164237417. The reversal of 164237401 is 104732461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157477401 + 6760000 = 12549^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 164237401 - 2¹ = 164237399 is a prime.

Together with 164237399, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 164237401.

It is not a weakly prime, because it can be changed into another prime (164237441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82118700 + 82118701.

It is an arithmetic number, because the mean of its divisors is an integer number (82118701).

Almost surely, 2^164237401 is an apocalyptic number.

It is an amenable number.

164237401 is a deficient number, since it is larger than the sum of its proper divisors (1).

164237401 is an equidigital number, since it uses as much as digits as its factorization.

164237401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 164237401 is about 12815.5140747455. The cubic root of 164237401 is about 547.6343585794.

Adding to 164237401 its reverse (104732461), we get a palindrome (268969862).

The spelling of 164237401 in words is "one hundred sixty-four million, two hundred thirty-seven thousand, four hundred one".