16279481 has 2 divisors, whose sum is σ = 16279482. Its totient is φ = 16279480.

The previous prime is 16279453. The next prime is 16279493. The reversal of 16279481 is 18497261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12138256 + 4141225 = 3484^2 + 2035^2 .

It is an emirp because it is prime and its reverse (18497261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16279481 - 2¹⁴ = 16263097 is a prime.

It is a super-2 number, since 2×16279481² = 530043003258722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16279981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8139740 + 8139741.

It is an arithmetic number, because the mean of its divisors is an integer number (8139741).

Almost surely, 2^16279481 is an apocalyptic number.

It is an amenable number.

16279481 is a deficient number, since it is larger than the sum of its proper divisors (1).

16279481 is an equidigital number, since it uses as much as digits as its factorization.

16279481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 16279481 is about 4034.7838851666. The cubic root of 16279481 is about 253.4429325328.

The spelling of 16279481 in words is "sixteen million, two hundred seventy-nine thousand, four hundred eighty-one".