2164253389 has 2 divisors, whose sum is σ = 2164253390. Its totient is φ = 2164253388.

The previous prime is 2164253359. The next prime is 2164253393. The reversal of 2164253389 is 9833524612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1837836900 + 326416489 = 42870^2 + 18067^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164253389 - 2⁷ = 2164253261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2164253359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082126694 + 1082126695.

It is an arithmetic number, because the mean of its divisors is an integer number (1082126695).

Almost surely, 2^2164253389 is an apocalyptic number.

It is an amenable number.

2164253389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164253389 is an equidigital number, since it uses as much as digits as its factorization.

2164253389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 43.

The square root of 2164253389 is about 46521.5368297308. The cubic root of 2164253389 is about 1293.5087436934.

The spelling of 2164253389 in words is "two billion, one hundred sixty-four million, two hundred fifty-three thousand, three hundred eighty-nine".