2167985377 has 8 divisors (see below), whose sum is σ = 2186611712. Its totient is φ = 2149383600.

The previous prime is 2167985357. The next prime is 2167985381. The reversal of 2167985377 is 7735897612.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2167985377 - 2¹¹ = 2167983329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2167985357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200602 + ... + 211132.

It is an arithmetic number, because the mean of its divisors is an integer number (273326464).

Almost surely, 2^2167985377 is an apocalyptic number.

It is an amenable number.

2167985377 is a deficient number, since it is larger than the sum of its proper divisors (18626335).

2167985377 is a wasteful number, since it uses less digits than its factorization.

2167985377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12279.

The product of its digits is 4445280, while the sum is 55.

The square root of 2167985377 is about 46561.6298791183. The cubic root of 2167985377 is about 1294.2518155013.

The spelling of 2167985377 in words is "two billion, one hundred sixty-seven million, nine hundred eighty-five thousand, three hundred seventy-seven".