49115819 has 2 divisors, whose sum is σ = 49115820. Its totient is φ = 49115818.

The previous prime is 49115813. The next prime is 49115837. The reversal of 49115819 is 91851194.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49115819 is a prime.

It is a super-2 number, since 2×49115819² = 4824727352081522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49115813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24557909 + 24557910.

It is an arithmetic number, because the mean of its divisors is an integer number (24557910).

Almost surely, 2^49115819 is an apocalyptic number.

49115819 is a deficient number, since it is larger than the sum of its proper divisors (1).

49115819 is an equidigital number, since it uses as much as digits as its factorization.

49115819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 38.

The square root of 49115819 is about 7008.2679029843. The cubic root of 49115819 is about 366.2186551159.

The spelling of 49115819 in words is "forty-nine million, one hundred fifteen thousand, eight hundred nineteen".