49749793818 has 8 divisors (see below), whose sum is σ = 99499587648. Its totient is φ = 16583264604.

The previous prime is 49749793813. The next prime is 49749793853. The reversal of 49749793818 is 81839794794.

It is a sphenic number, since it is the product of 3 distinct primes.

49749793818 is an admirable number.

It is a super-2 number, since 2×49749793818² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49749793813) 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 in 3 ways as a sum of consecutive naturals, for example, 4145816146 + ... + 4145816157.

It is an arithmetic number, because the mean of its divisors is an integer number (12437448456).

Almost surely, 2^49749793818 is an apocalyptic number.

49749793818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49749793818 is a wasteful number, since it uses less digits than its factorization.

49749793818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8291632308.

The product of its digits is 109734912, while the sum is 69.

The spelling of 49749793818 in words is "forty-nine billion, seven hundred forty-nine million, seven hundred ninety-three thousand, eight hundred eighteen".