61419749 has 2 divisors, whose sum is σ = 61419750. Its totient is φ = 61419748.

The previous prime is 61419731. The next prime is 61419769. The reversal of 61419749 is 94791416.

61419749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60730849 + 688900 = 7793^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 61419749 - 2⁸ = 61419493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61419769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30709874 + 30709875.

It is an arithmetic number, because the mean of its divisors is an integer number (30709875).

Almost surely, 2^61419749 is an apocalyptic number.

It is an amenable number.

61419749 is a deficient number, since it is larger than the sum of its proper divisors (1).

61419749 is an equidigital number, since it uses as much as digits as its factorization.

61419749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 61419749 is about 7837.0752835481. The cubic root of 61419749 is about 394.5505736039.

The spelling of 61419749 in words is "sixty-one million, four hundred nineteen thousand, seven hundred forty-nine".