2169941393 has 2 divisors, whose sum is σ = 2169941394. Its totient is φ = 2169941392.

The previous prime is 2169941377. The next prime is 2169941413. The reversal of 2169941393 is 3931499612.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1417371904 + 752569489 = 37648^2 + 27433^2 .

It is a cyclic number.

It is not a de Polignac number, because 2169941393 - 2⁴ = 2169941377 is a prime.

It is not a weakly prime, because it can be changed into another prime (2169949393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084970696 + 1084970697.

It is an arithmetic number, because the mean of its divisors is an integer number (1084970697).

Almost surely, 2^2169941393 is an apocalyptic number.

It is an amenable number.

2169941393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2169941393 is an equidigital number, since it uses as much as digits as its factorization.

2169941393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 47.

The square root of 2169941393 is about 46582.6297346983. The cubic root of 2169941393 is about 1294.6409350213.

The spelling of 2169941393 in words is "two billion, one hundred sixty-nine million, nine hundred forty-one thousand, three hundred ninety-three".