164253797 has 2 divisors, whose sum is σ = 164253798. Its totient is φ = 164253796.

The previous prime is 164253781. The next prime is 164253809. The reversal of 164253797 is 797352461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133772356 + 30481441 = 11566^2 + 5521^2 .

It is a cyclic number.

It is not a de Polignac number, because 164253797 - 2⁴ = 164253781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164253197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82126898 + 82126899.

It is an arithmetic number, because the mean of its divisors is an integer number (82126899).

Almost surely, 2^164253797 is an apocalyptic number.

It is an amenable number.

164253797 is a deficient number, since it is larger than the sum of its proper divisors (1).

164253797 is an equidigital number, since it uses as much as digits as its factorization.

164253797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 44.

The square root of 164253797 is about 12816.1537521988. The cubic root of 164253797 is about 547.6525816194.

The spelling of 164253797 in words is "one hundred sixty-four million, two hundred fifty-three thousand, seven hundred ninety-seven".