2179698890 has 16 divisors (see below), whose sum is σ = 3924357120. Its totient is φ = 871679760.

The previous prime is 2179698889. The next prime is 2179698919. The reversal of 2179698890 is 988969712.

It is a super-3 number, since 3×2179698890³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25751 + ... + 70869.

It is an arithmetic number, because the mean of its divisors is an integer number (245272320).

Almost surely, 2^2179698890 is an apocalyptic number.

2179698890 is a deficient number, since it is larger than the sum of its proper divisors (1744658230).

2179698890 is a wasteful number, since it uses less digits than its factorization.

2179698890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49957.

The product of its (nonzero) digits is 3919104, while the sum is 59.

The square root of 2179698890 is about 46687.2454745405. The cubic root of 2179698890 is about 1296.5785553346.

The spelling of 2179698890 in words is "two billion, one hundred seventy-nine million, six hundred ninety-eight thousand, eight hundred ninety".