1620980218 has 32 divisors (see below), whose sum is σ = 2859236352. Its totient is φ = 679492800.

The previous prime is 1620980191. The next prime is 1620980237. The reversal of 1620980218 is 8120890261.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418780 + ... + 422632.

It is an arithmetic number, because the mean of its divisors is an integer number (89351136).

Almost surely, 2^1620980218 is an apocalyptic number.

1620980218 is a deficient number, since it is larger than the sum of its proper divisors (1238256134).

1620980218 is a wasteful number, since it uses less digits than its factorization.

1620980218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5350.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 1620980218 is about 40261.3986095863. The cubic root of 1620980218 is about 1174.6971225986.

The spelling of 1620980218 in words is "one billion, six hundred twenty million, nine hundred eighty thousand, two hundred eighteen".