49406619919 has 2 divisors, whose sum is σ = 49406619920. Its totient is φ = 49406619918.

The previous prime is 49406619917. The next prime is 49406619943. The reversal of 49406619919 is 91991660494.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49406619919 - 2¹ = 49406619917 is a prime.

It is a super-2 number, since 2×49406619919² (a number of 22 digits) contains 22 as substring.

Together with 49406619917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49406619917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24703309959 + 24703309960.

It is an arithmetic number, because the mean of its divisors is an integer number (24703309960).

Almost surely, 2^49406619919 is an apocalyptic number.

49406619919 is a deficient number, since it is larger than the sum of its proper divisors (1).

49406619919 is an equidigital number, since it uses as much as digits as its factorization.

49406619919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3779136, while the sum is 58.

The spelling of 49406619919 in words is "forty-nine billion, four hundred six million, six hundred nineteen thousand, nine hundred nineteen".