7881049806 has 16 divisors (see below), whose sum is σ = 18013828224. Its totient is φ = 2251728504.

The previous prime is 7881049789. The next prime is 7881049811. The reversal of 7881049806 is 6089401887.

It is a super-2 number, since 2×7881049806² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93821980 + ... + 93822063.

It is an arithmetic number, because the mean of its divisors is an integer number (1125864264).

Almost surely, 2^7881049806 is an apocalyptic number.

7881049806 is an abundant number, since it is smaller than the sum of its proper divisors (10132778418).

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

7881049806 is a wasteful number, since it uses less digits than its factorization.

7881049806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187644055.

The product of its (nonzero) digits is 774144, while the sum is 51.

The square root of 7881049806 is about 88775.2769975966. The cubic root of 7881049806 is about 1990.0379449512.

The spelling of 7881049806 in words is "seven billion, eight hundred eighty-one million, forty-nine thousand, eight hundred six".