164812049 has 2 divisors, whose sum is σ = 164812050. Its totient is φ = 164812048.

The previous prime is 164812009. The next prime is 164812079. The reversal of 164812049 is 940218461.

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., 154132225 + 10679824 = 12415^2 + 3268^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164812049 is a prime.

It is a super-2 number, since 2×164812049² = 54326022991156802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164812009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82406024 + 82406025.

It is an arithmetic number, because the mean of its divisors is an integer number (82406025).

Almost surely, 2^164812049 is an apocalyptic number.

It is an amenable number.

164812049 is a deficient number, since it is larger than the sum of its proper divisors (1).

164812049 is an equidigital number, since it uses as much as digits as its factorization.

164812049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 164812049 is about 12837.9145113215. The cubic root of 164812049 is about 548.2723185672.

The spelling of 164812049 in words is "one hundred sixty-four million, eight hundred twelve thousand, forty-nine".