6169381581 has 16 divisors (see below), whose sum is σ = 8997721920. Its totient is φ = 3728987520.

The previous prime is 6169381571. The next prime is 6169381663. The reversal of 6169381581 is 1851839616.

6169381581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6169381581 - 2¹⁰ = 6169380557 is a prime.

It is a super-2 number, since 2×6169381581² = 76122538183964119122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6169381581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6169381531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238296 + ... + 262913.

It is an arithmetic number, because the mean of its divisors is an integer number (562357620).

Almost surely, 2^6169381581 is an apocalyptic number.

It is an amenable number.

6169381581 is a deficient number, since it is larger than the sum of its proper divisors (2828340339).

6169381581 is a wasteful number, since it uses less digits than its factorization.

6169381581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501596.

The product of its digits is 311040, while the sum is 48.

The square root of 6169381581 is about 78545.4109480624. The cubic root of 6169381581 is about 1834.0614286624.

The spelling of 6169381581 in words is "six billion, one hundred sixty-nine million, three hundred eighty-one thousand, five hundred eighty-one".