49378019 has 2 divisors, whose sum is σ = 49378020. Its totient is φ = 49378018.

The previous prime is 49377997. The next prime is 49378027. The reversal of 49378019 is 91087394.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49378019 is a prime.

It is a super-2 number, since 2×49378019² = 4876377520728722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49378099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24689009 + 24689010.

It is an arithmetic number, because the mean of its divisors is an integer number (24689010).

Almost surely, 2^49378019 is an apocalyptic number.

49378019 is a deficient number, since it is larger than the sum of its proper divisors (1).

49378019 is an equidigital number, since it uses as much as digits as its factorization.

49378019 is an odious number, because the sum of its binary digits is odd.

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

The square root of 49378019 is about 7026.9494803933. The cubic root of 49378019 is about 366.8691730774.

The spelling of 49378019 in words is "forty-nine million, three hundred seventy-eight thousand, nineteen".