2978451676198 has 4 divisors (see below), whose sum is σ = 4467677514300. Its totient is φ = 1489225838098.

The previous prime is 2978451676183. The next prime is 2978451676201. The reversal of 2978451676198 is 8916761548792.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2978451676198.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744612919048 + ... + 744612919051.

It is an arithmetic number, because the mean of its divisors is an integer number (1116919378575).

Almost surely, 2^{2978451676198} is an apocalyptic number.

2978451676198 is a deficient number, since it is larger than the sum of its proper divisors (1489225838102).

2978451676198 is a wasteful number, since it uses less digits than its factorization.

2978451676198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489225838101.

The product of its digits is 365783040, while the sum is 73.

The spelling of 2978451676198 in words is "two trillion, nine hundred seventy-eight billion, four hundred fifty-one million, six hundred seventy-six thousand, one hundred ninety-eight".