1980147518 has 4 divisors (see below), whose sum is σ = 2970221280. Its totient is φ = 990073758.

The previous prime is 1980147503. The next prime is 1980147563. The reversal of 1980147518 is 8157410891.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495036878 + ... + 495036881.

It is an arithmetic number, because the mean of its divisors is an integer number (742555320).

Almost surely, 2^1980147518 is an apocalyptic number.

1980147518 is a deficient number, since it is larger than the sum of its proper divisors (990073762).

1980147518 is an equidigital number, since it uses as much as digits as its factorization.

1980147518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990073761.

The product of its (nonzero) digits is 80640, while the sum is 44.

The square root of 1980147518 is about 44498.8485019556. The cubic root of 1980147518 is about 1255.7384199570.

The spelling of 1980147518 in words is "one billion, nine hundred eighty million, one hundred forty-seven thousand, five hundred eighteen".