61018369 has 2 divisors, whose sum is σ = 61018370. Its totient is φ = 61018368.

The previous prime is 61018357. The next prime is 61018381. The reversal of 61018369 is 96381016.

It is a balanced prime because it is at equal distance from previous prime (61018357) and next prime (61018381).

It can be written as a sum of positive squares in only one way, i.e., 30636225 + 30382144 = 5535^2 + 5512^2 .

It is a cyclic number.

It is not a de Polignac number, because 61018369 - 2⁵ = 61018337 is a prime.

It is a super-2 number, since 2×61018369² = 7446482710840322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (61018339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30509184 + 30509185.

It is an arithmetic number, because the mean of its divisors is an integer number (30509185).

Almost surely, 2^61018369 is an apocalyptic number.

It is an amenable number.

61018369 is a deficient number, since it is larger than the sum of its proper divisors (1).

61018369 is an equidigital number, since it uses as much as digits as its factorization.

61018369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 61018369 is about 7811.4255421146. The cubic root of 61018369 is about 393.6892277418.

The spelling of 61018369 in words is "sixty-one million, eighteen thousand, three hundred sixty-nine".