16419451 has 2 divisors, whose sum is σ = 16419452. Its totient is φ = 16419450.

The previous prime is 16419419. The next prime is 16419461. The reversal of 16419451 is 15491461.

It is a strong prime.

It is an emirp because it is prime and its reverse (15491461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16419451 - 2⁵ = 16419419 is a prime.

It is a super-2 number, since 2×16419451² = 539196742282802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16419461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8209725 + 8209726.

It is an arithmetic number, because the mean of its divisors is an integer number (8209726).

Almost surely, 2^16419451 is an apocalyptic number.

16419451 is a deficient number, since it is larger than the sum of its proper divisors (1).

16419451 is an equidigital number, since it uses as much as digits as its factorization.

16419451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 31.

The square root of 16419451 is about 4052.0921756544. The cubic root of 16419451 is about 254.1672230511.

The spelling of 16419451 in words is "sixteen million, four hundred nineteen thousand, four hundred fifty-one".