2638948166 has 8 divisors (see below), whose sum is σ = 3966200640. Its totient is φ = 1316881288.

The previous prime is 2638948163. The next prime is 2638948183. The reversal of 2638948166 is 6618498362.

2638948166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct 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 (2638948163) 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, 1295126 + ... + 1297161.

It is an arithmetic number, because the mean of its divisors is an integer number (495775080).

Almost surely, 2^2638948166 is an apocalyptic number.

2638948166 is a deficient number, since it is larger than the sum of its proper divisors (1327252474).

2638948166 is a wasteful number, since it uses less digits than its factorization.

2638948166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592798.

The product of its digits is 2985984, while the sum is 53.

The square root of 2638948166 is about 51370.6936492004. The cubic root of 2638948166 is about 1381.9010706576.

The spelling of 2638948166 in words is "two billion, six hundred thirty-eight million, nine hundred forty-eight thousand, one hundred sixty-six".