1940081167 has 4 divisors (see below), whose sum is σ = 1941423376. Its totient is φ = 1938738960.

The previous prime is 1940081161. The next prime is 1940081197. The reversal of 1940081167 is 7611800491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7611800491 = 29 ⋅262475879.

It is a cyclic number.

It is not a de Polignac number, because 1940081167 - 2¹⁵ = 1940048399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940081161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668934 + ... + 671827.

It is an arithmetic number, because the mean of its divisors is an integer number (485355844).

Almost surely, 2^1940081167 is an apocalyptic number.

1940081167 is a deficient number, since it is larger than the sum of its proper divisors (1342209).

1940081167 is a wasteful number, since it uses less digits than its factorization.

1940081167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342208.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 1940081167 is about 44046.3524823566. The cubic root of 1940081167 is about 1247.2110978742.

The spelling of 1940081167 in words is "one billion, nine hundred forty million, eighty-one thousand, one hundred sixty-seven".