978055166 has 8 divisors (see below), whose sum is σ = 1600453944. Its totient is φ = 444570520.

The previous prime is 978055157. The next prime is 978055181. The reversal of 978055166 is 661550879.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 978055166.

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, 22228505 + ... + 22228548.

It is an arithmetic number, because the mean of its divisors is an integer number (200056743).

Almost surely, 2^978055166 is an apocalyptic number.

978055166 is a deficient number, since it is larger than the sum of its proper divisors (622398778).

978055166 is a wasteful number, since it uses less digits than its factorization.

978055166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44457066.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 978055166 is about 31273.8735368678. The cubic root of 978055166 is about 992.6308848659.

It can be divided in two parts, 9780 and 55166, that added together give a palindrome (64946).

The spelling of 978055166 in words is "nine hundred seventy-eight million, fifty-five thousand, one hundred sixty-six".