1980000478 has 8 divisors (see below), whose sum is σ = 2997248760. Its totient is φ = 980917560.

The previous prime is 1980000401. The next prime is 1980000511. The reversal of 1980000478 is 8740000891.

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

1980000478 is a modest number, since divided by 478 gives 198 as remainder.

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, 4541068 + ... + 4541503.

It is an arithmetic number, because the mean of its divisors is an integer number (374656095).

Almost surely, 2^1980000478 is an apocalyptic number.

1980000478 is a deficient number, since it is larger than the sum of its proper divisors (1017248282).

1980000478 is a wasteful number, since it uses less digits than its factorization.

1980000478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9082682.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1980000478 is about 44497.1962936992. The cubic root of 1980000478 is about 1255.7073366924.

The spelling of 1980000478 in words is "one billion, nine hundred eighty million, four hundred seventy-eight", and thus it is an aban number.