16380491 has 2 divisors, whose sum is σ = 16380492. Its totient is φ = 16380490.

The previous prime is 16380479. The next prime is 16380499. The reversal of 16380491 is 19408361.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16380491 - 2¹⁴ = 16364107 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16380499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8190245 + 8190246.

It is an arithmetic number, because the mean of its divisors is an integer number (8190246).

Almost surely, 2^16380491 is an apocalyptic number.

16380491 is a deficient number, since it is larger than the sum of its proper divisors (1).

16380491 is an equidigital number, since it uses as much as digits as its factorization.

16380491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 16380491 is about 4047.2819274175. The cubic root of 16380491 is about 253.9660348904.

The spelling of 16380491 in words is "sixteen million, three hundred eighty thousand, four hundred ninety-one".