1662223429 has 2 divisors, whose sum is σ = 1662223430. Its totient is φ = 1662223428.

The previous prime is 1662223403. The next prime is 1662223457. The reversal of 1662223429 is 9243222661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1659340225 + 2883204 = 40735^2 + 1698^2 .

It is a cyclic number.

It is not a de Polignac number, because 1662223429 - 2⁵ = 1662223397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1662223489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831111714 + 831111715.

It is an arithmetic number, because the mean of its divisors is an integer number (831111715).

Almost surely, 2^1662223429 is an apocalyptic number.

It is an amenable number.

1662223429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662223429 is an equidigital number, since it uses as much as digits as its factorization.

1662223429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 1662223429 is about 40770.3744034808. The cubic root of 1662223429 is about 1184.5765556674.

The spelling of 1662223429 in words is "one billion, six hundred sixty-two million, two hundred twenty-three thousand, four hundred twenty-nine".