1980426218 has 8 divisors (see below), whose sum is σ = 2974100160. Its totient is φ = 989059500.

The previous prime is 1980426209. The next prime is 1980426229. The reversal of 1980426218 is 8126240891.

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

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, 574658 + ... + 578093.

It is an arithmetic number, because the mean of its divisors is an integer number (371762520).

Almost surely, 2^1980426218 is an apocalyptic number.

1980426218 is a deficient number, since it is larger than the sum of its proper divisors (993673942).

1980426218 is a wasteful number, since it uses less digits than its factorization.

1980426218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153612.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 1980426218 is about 44501.9799334816. The cubic root of 1980426218 is about 1255.7973310358.

The spelling of 1980426218 in words is "one billion, nine hundred eighty million, four hundred twenty-six thousand, two hundred eighteen".