2173378694 has 8 divisors (see below), whose sum is σ = 3268581120. Its totient is φ = 1083851656.

The previous prime is 2173378681. The next prime is 2173378709. The reversal of 2173378694 is 4968733712.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1417889 + ... + 1419420.

It is an arithmetic number, because the mean of its divisors is an integer number (408572640).

Almost surely, 2^2173378694 is an apocalyptic number.

2173378694 is a deficient number, since it is larger than the sum of its proper divisors (1095202426).

2173378694 is a wasteful number, since it uses less digits than its factorization.

2173378694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837694.

The product of its digits is 1524096, while the sum is 50.

The square root of 2173378694 is about 46619.5098000826. The cubic root of 2173378694 is about 1295.3241674419.

The spelling of 2173378694 in words is "two billion, one hundred seventy-three million, three hundred seventy-eight thousand, six hundred ninety-four".