8078187838 has 16 divisors (see below), whose sum is σ = 13867079040. Its totient is φ = 3457391256.

The previous prime is 8078187833. The next prime is 8078187863. The reversal of 8078187838 is 8387818708.

It is a super-2 number, since 2×8078187838² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8078187833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380056 + ... + 400747.

It is an arithmetic number, because the mean of its divisors is an integer number (866692440).

Almost surely, 2^8078187838 is an apocalyptic number.

8078187838 is a deficient number, since it is larger than the sum of its proper divisors (5788891202).

8078187838 is a wasteful number, since it uses less digits than its factorization.

8078187838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781551.

The product of its (nonzero) digits is 4816896, while the sum is 58.

The square root of 8078187838 is about 89878.7396329076. The cubic root of 8078187838 is about 2006.4945408087.

The spelling of 8078187838 in words is "eight billion, seventy-eight million, one hundred eighty-seven thousand, eight hundred thirty-eight".