61018193 has 2 divisors, whose sum is σ = 61018194. Its totient is φ = 61018192.

The previous prime is 61018171. The next prime is 61018229. The reversal of 61018193 is 39181016.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53684929 + 7333264 = 7327^2 + 2708^2 .

It is a cyclic number.

It is not a de Polignac number, because 61018193 - 2⁸ = 61017937 is a prime.

It is not a weakly prime, because it can be changed into another prime (61018123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30509096 + 30509097.

It is an arithmetic number, because the mean of its divisors is an integer number (30509097).

Almost surely, 2^61018193 is an apocalyptic number.

It is an amenable number.

61018193 is a deficient number, since it is larger than the sum of its proper divisors (1).

61018193 is an equidigital number, since it uses as much as digits as its factorization.

61018193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 61018193 is about 7811.4142765571. The cubic root of 61018193 is about 393.6888492253.

The spelling of 61018193 in words is "sixty-one million, eighteen thousand, one hundred ninety-three".