61938049 has 2 divisors, whose sum is σ = 61938050. Its totient is φ = 61938048.

The previous prime is 61938047. The next prime is 61938061. The reversal of 61938049 is 94083916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36385024 + 25553025 = 6032^2 + 5055^2 .

It is a cyclic number.

It is not a de Polignac number, because 61938049 - 2¹ = 61938047 is a prime.

Together with 61938047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61938047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30969024 + 30969025.

It is an arithmetic number, because the mean of its divisors is an integer number (30969025).

Almost surely, 2^61938049 is an apocalyptic number.

It is an amenable number.

61938049 is a deficient number, since it is larger than the sum of its proper divisors (1).

61938049 is an equidigital number, since it uses as much as digits as its factorization.

61938049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 61938049 is about 7870.0729983908. The cubic root of 61938049 is about 395.6572915833.

The spelling of 61938049 in words is "sixty-one million, nine hundred thirty-eight thousand, forty-nine".