61441819 has 2 divisors, whose sum is σ = 61441820. Its totient is φ = 61441818.

The previous prime is 61441817. The next prime is 61441841. The reversal of 61441819 is 91814416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61441819 - 2¹ = 61441817 is a prime.

It is a super-2 number, since 2×61441819² = 7550194244057522, which contains 22 as substring.

Together with 61441817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61441811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30720909 + 30720910.

It is an arithmetic number, because the mean of its divisors is an integer number (30720910).

Almost surely, 2^61441819 is an apocalyptic number.

61441819 is a deficient number, since it is larger than the sum of its proper divisors (1).

61441819 is an equidigital number, since it uses as much as digits as its factorization.

61441819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 61441819 is about 7838.4832078662. The cubic root of 61441819 is about 394.5978259862.

The spelling of 61441819 in words is "sixty-one million, four hundred forty-one thousand, eight hundred nineteen".