61188893 has 2 divisors, whose sum is σ = 61188894. Its totient is φ = 61188892.

The previous prime is 61188887. The next prime is 61188923. The reversal of 61188893 is 39888116.

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., 61042969 + 145924 = 7813^2 + 382^2 .

It is a cyclic number.

It is not a de Polignac number, because 61188893 - 2¹⁰ = 61187869 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61188863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30594446 + 30594447.

It is an arithmetic number, because the mean of its divisors is an integer number (30594447).

Almost surely, 2^61188893 is an apocalyptic number.

It is an amenable number.

61188893 is a deficient number, since it is larger than the sum of its proper divisors (1).

61188893 is an equidigital number, since it uses as much as digits as its factorization.

61188893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 44.

The square root of 61188893 is about 7822.3329640204. The cubic root of 61188893 is about 394.0556257192.

The spelling of 61188893 in words is "sixty-one million, one hundred eighty-eight thousand, eight hundred ninety-three".