2173081738 has 8 divisors (see below), whose sum is σ = 3259830240. Its totient is φ = 1086471660.

The previous prime is 2173081733. The next prime is 2173081753. The reversal of 2173081738 is 8371803712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2173081738.

It is not an unprimeable number, because it can be changed into a prime (2173081733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25573 + ... + 70711.

It is an arithmetic number, because the mean of its divisors is an integer number (407478780).

Almost surely, 2^2173081738 is an apocalyptic number.

2173081738 is a deficient number, since it is larger than the sum of its proper divisors (1086748502).

2173081738 is a wasteful number, since it uses less digits than its factorization.

2173081738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69212.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 2173081738 is about 46616.3248015113. The cubic root of 2173081738 is about 1295.2651699303.

The spelling of 2173081738 in words is "two billion, one hundred seventy-three million, eighty-one thousand, seven hundred thirty-eight".