5109749878 has 4 divisors (see below), whose sum is σ = 7664624820. Its totient is φ = 2554874938.

The previous prime is 5109749873. The next prime is 5109749893. The reversal of 5109749878 is 8789479015.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×5109749878² = 52219087631442029768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5109749873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277437468 + ... + 1277437471.

It is an arithmetic number, because the mean of its divisors is an integer number (1916156205).

Almost surely, 2^5109749878 is an apocalyptic number.

5109749878 is a deficient number, since it is larger than the sum of its proper divisors (2554874942).

5109749878 is a wasteful number, since it uses less digits than its factorization.

5109749878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554874941.

The product of its (nonzero) digits is 5080320, while the sum is 58.

The square root of 5109749878 is about 71482.5144913076. The cubic root of 5109749878 is about 1722.3968160086.

The spelling of 5109749878 in words is "five billion, one hundred nine million, seven hundred forty-nine thousand, eight hundred seventy-eight".