2167995254 has 4 divisors (see below), whose sum is σ = 3251992884. Its totient is φ = 1083997626.

The previous prime is 2167995251. The next prime is 2167995281. The reversal of 2167995254 is 4525997612.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2167995251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541998812 + ... + 541998815.

It is an arithmetic number, because the mean of its divisors is an integer number (812998221).

Almost surely, 2^2167995254 is an apocalyptic number.

2167995254 is a deficient number, since it is larger than the sum of its proper divisors (1083997630).

2167995254 is a wasteful number, since it uses less digits than its factorization.

2167995254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083997629.

The product of its digits is 1360800, while the sum is 50.

The square root of 2167995254 is about 46561.7359427245. The cubic root of 2167995254 is about 1294.2537809675.

The spelling of 2167995254 in words is "two billion, one hundred sixty-seven million, nine hundred ninety-five thousand, two hundred fifty-four".