2664167438 has 4 divisors (see below), whose sum is σ = 3996251160. Its totient is φ = 1332083718.

The previous prime is 2664167419. The next prime is 2664167459. The reversal of 2664167438 is 8347614662.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2664167392 and 2664167401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666041858 + ... + 666041861.

It is an arithmetic number, because the mean of its divisors is an integer number (999062790).

Almost surely, 2^2664167438 is an apocalyptic number.

2664167438 is a deficient number, since it is larger than the sum of its proper divisors (1332083722).

2664167438 is a wasteful number, since it uses less digits than its factorization.

2664167438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332083721.

The product of its digits is 1161216, while the sum is 47.

The square root of 2664167438 is about 51615.5735994477. The cubic root of 2664167438 is about 1386.2891961989.

The spelling of 2664167438 in words is "two billion, six hundred sixty-four million, one hundred sixty-seven thousand, four hundred thirty-eight".