1423354649 has 2 divisors, whose sum is σ = 1423354650. Its totient is φ = 1423354648.

The previous prime is 1423354637. The next prime is 1423354741. The reversal of 1423354649 is 9464533241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1109356249 + 313998400 = 33307^2 + 17720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423354649 is a prime.

It is not a weakly prime, because it can be changed into another prime (1423353649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711677324 + 711677325.

It is an arithmetic number, because the mean of its divisors is an integer number (711677325).

Almost surely, 2^1423354649 is an apocalyptic number.

It is an amenable number.

1423354649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423354649 is an equidigital number, since it uses as much as digits as its factorization.

1423354649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 41.

The square root of 1423354649 is about 37727.3726755522. The cubic root of 1423354649 is about 1124.8752846769.

The spelling of 1423354649 in words is "one billion, four hundred twenty-three million, three hundred fifty-four thousand, six hundred forty-nine".