61194149 has 2 divisors, whose sum is σ = 61194150. Its totient is φ = 61194148.

The previous prime is 61194139. The next prime is 61194167. The reversal of 61194149 is 94149116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56100100 + 5094049 = 7490^2 + 2257^2 .

It is a cyclic number.

It is not a de Polignac number, because 61194149 - 2¹² = 61190053 is a prime.

It is equal to p_3628772 and since 61194149 and 3628772 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61194139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30597074 + 30597075.

It is an arithmetic number, because the mean of its divisors is an integer number (30597075).

Almost surely, 2^61194149 is an apocalyptic number.

It is an amenable number.

61194149 is a deficient number, since it is larger than the sum of its proper divisors (1).

61194149 is an equidigital number, since it uses as much as digits as its factorization.

61194149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The square root of 61194149 is about 7822.6689179589. The cubic root of 61194149 is about 394.0669082520.

The spelling of 61194149 in words is "sixty-one million, one hundred ninety-four thousand, one hundred forty-nine".