7166390378 has 8 divisors (see below), whose sum is σ = 12285240672. Its totient is φ = 3071310156.

The previous prime is 7166390353. The next prime is 7166390401. The reversal of 7166390378 is 8730936617.

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

It is a Curzon 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, 255942500 + ... + 255942527.

It is an arithmetic number, because the mean of its divisors is an integer number (1535655084).

Almost surely, 2^7166390378 is an apocalyptic number.

7166390378 is a deficient number, since it is larger than the sum of its proper divisors (5118850294).

7166390378 is a wasteful number, since it uses less digits than its factorization.

7166390378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511885036.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 7166390378 is about 84654.5354839302. The cubic root of 7166390378 is about 1927.9694769492.

The spelling of 7166390378 in words is "seven billion, one hundred sixty-six million, three hundred ninety thousand, three hundred seventy-eight".