8072181849 has 32 divisors (see below), whose sum is σ = 11276697600. Its totient is φ = 5131449792.

The previous prime is 8072181841. The next prime is 8072181877. The reversal of 8072181849 is 9481812708.

It is not a de Polignac number, because 8072181849 - 2³ = 8072181841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8072181798 and 8072181807.

It is not an unprimeable number, because it can be changed into a prime (8072181841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1166602 + ... + 1173500.

It is an arithmetic number, because the mean of its divisors is an integer number (352396800).

Almost surely, 2^8072181849 is an apocalyptic number.

It is an amenable number.

8072181849 is a deficient number, since it is larger than the sum of its proper divisors (3204515751).

8072181849 is a wasteful number, since it uses less digits than its factorization.

8072181849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7149.

The product of its (nonzero) digits is 258048, while the sum is 48.

The square root of 8072181849 is about 89845.3217980769. The cubic root of 8072181849 is about 2005.9971531858.

The spelling of 8072181849 in words is "eight billion, seventy-two million, one hundred eighty-one thousand, eight hundred forty-nine".