164481743 has 2 divisors, whose sum is σ = 164481744. Its totient is φ = 164481742.

The previous prime is 164481739. The next prime is 164481781. The reversal of 164481743 is 347184461.

It is a happy number.

It is an a-pointer prime, because the next prime (164481781) can be obtained adding 164481743 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164481743 - 2² = 164481739 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 164481697 and 164481706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164481143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82240871 + 82240872.

It is an arithmetic number, because the mean of its divisors is an integer number (82240872).

Almost surely, 2^164481743 is an apocalyptic number.

164481743 is a deficient number, since it is larger than the sum of its proper divisors (1).

164481743 is an equidigital number, since it uses as much as digits as its factorization.

164481743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 38.

The square root of 164481743 is about 12825.0435866706. The cubic root of 164481743 is about 547.9058025794.

The spelling of 164481743 in words is "one hundred sixty-four million, four hundred eighty-one thousand, seven hundred forty-three".