6381977169 has 8 divisors (see below), whose sum is σ = 8512594912. Its totient is φ = 4253005440.

The previous prime is 6381977113. The next prime is 6381977171. The reversal of 6381977169 is 9617791836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6381977169 - 2¹¹ = 6381975121 is a prime.

It is a super-2 number, since 2×6381977169² = 81459265171274509122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6381977269) 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, 402427 + ... + 417984.

It is an arithmetic number, because the mean of its divisors is an integer number (1064074364).

Almost surely, 2^6381977169 is an apocalyptic number.

It is an amenable number.

6381977169 is a deficient number, since it is larger than the sum of its proper divisors (2130617743).

6381977169 is a wasteful number, since it uses less digits than its factorization.

6381977169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823007.

The product of its digits is 3429216, while the sum is 57.

The square root of 6381977169 is about 79887.2778920399. The cubic root of 6381977169 is about 1854.8910913652.

The spelling of 6381977169 in words is "six billion, three hundred eighty-one million, nine hundred seventy-seven thousand, one hundred sixty-nine".