164752649 has 2 divisors, whose sum is σ = 164752650. Its totient is φ = 164752648.

The previous prime is 164752633. The next prime is 164752663. The reversal of 164752649 is 946257461.

164752649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138415225 + 26337424 = 11765^2 + 5132^2 .

It is a cyclic number.

It is not a de Polignac number, because 164752649 - 2⁴ = 164752633 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (164752619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82376324 + 82376325.

It is an arithmetic number, because the mean of its divisors is an integer number (82376325).

Almost surely, 2^164752649 is an apocalyptic number.

It is an amenable number.

164752649 is a deficient number, since it is larger than the sum of its proper divisors (1).

164752649 is an equidigital number, since it uses as much as digits as its factorization.

164752649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The square root of 164752649 is about 12835.6008429680. The cubic root of 164752649 is about 548.2064429446.

The spelling of 164752649 in words is "one hundred sixty-four million, seven hundred fifty-two thousand, six hundred forty-nine".