2177486138 has 16 divisors (see below), whose sum is σ = 3368070720. Its totient is φ = 1055148000.

The previous prime is 2177486137. The next prime is 2177486147. The reversal of 2177486138 is 8316847712.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2177486092 and 2177486101.

It is not an unprimeable number, because it can be changed into a prime (2177486137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75548 + ... + 100311.

It is an arithmetic number, because the mean of its divisors is an integer number (210504420).

Almost surely, 2^2177486138 is an apocalyptic number.

2177486138 is a deficient number, since it is larger than the sum of its proper divisors (1190584582).

2177486138 is a wasteful number, since it uses less digits than its factorization.

2177486138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176053.

The product of its digits is 451584, while the sum is 47.

The square root of 2177486138 is about 46663.5418501425. The cubic root of 2177486138 is about 1296.1396601291.

The spelling of 2177486138 in words is "two billion, one hundred seventy-seven million, four hundred eighty-six thousand, one hundred thirty-eight".