2121403898 has 8 divisors (see below), whose sum is σ = 3183027840. Its totient is φ = 1060394620.

The previous prime is 2121403861. The next prime is 2121403901. The reversal of 2121403898 is 8983041212.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144938 + ... + 158901.

It is an arithmetic number, because the mean of its divisors is an integer number (397878480).

Almost surely, 2^2121403898 is an apocalyptic number.

2121403898 is a deficient number, since it is larger than the sum of its proper divisors (1061623942).

2121403898 is a wasteful number, since it uses less digits than its factorization.

2121403898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307332.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 2121403898 is about 46058.7005678623. The cubic root of 2121403898 is about 1284.9151630365.

The spelling of 2121403898 in words is "two billion, one hundred twenty-one million, four hundred three thousand, eight hundred ninety-eight".