3978174628 has 12 divisors (see below), whose sum is σ = 7328216560. Its totient is φ = 1884398472.

The previous prime is 3978174587. The next prime is 3978174667. The reversal of 3978174628 is 8264718793.

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, 26172126 + ... + 26172277.

Almost surely, 2^3978174628 is an apocalyptic number.

3978174628 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

3978174628 is a deficient number, since it is larger than the sum of its proper divisors (3350041932).

3978174628 is a wasteful number, since it uses less digits than its factorization.

3978174628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52344426 (or 52344424 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 55.

The square root of 3978174628 is about 63072.7724775120. The cubic root of 3978174628 is about 1584.5086500537.

The spelling of 3978174628 in words is "three billion, nine hundred seventy-eight million, one hundred seventy-four thousand, six hundred twenty-eight".