10618409 has 2 divisors, whose sum is σ = 10618410. Its totient is φ = 10618408.

The previous prime is 10618393. The next prime is 10618417. The reversal of 10618409 is 90481601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6325225 + 4293184 = 2515^2 + 2072^2 .

It is a cyclic number.

It is not a de Polignac number, because 10618409 - 2⁴ = 10618393 is a prime.

It is a super-2 number, since 2×10618409² = 225501219382562, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10618429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5309204 + 5309205.

It is an arithmetic number, because the mean of its divisors is an integer number (5309205).

Almost surely, 2^10618409 is an apocalyptic number.

It is an amenable number.

10618409 is a deficient number, since it is larger than the sum of its proper divisors (1).

10618409 is an equidigital number, since it uses as much as digits as its factorization.

10618409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 10618409 is about 3258.5900325141. The cubic root of 10618409 is about 219.7960161589.

The spelling of 10618409 in words is "ten million, six hundred eighteen thousand, four hundred nine".