2136321998 has 8 divisors (see below), whose sum is σ = 3205747800. Its totient is φ = 1067739400.

The previous prime is 2136321959. The next prime is 2136322031. The reversal of 2136321998 is 8991236312.

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

It is a Curzon number.

It is a congruent number.

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, 204428 + ... + 214623.

It is an arithmetic number, because the mean of its divisors is an integer number (400718475).

Almost surely, 2^2136321998 is an apocalyptic number.

2136321998 is a deficient number, since it is larger than the sum of its proper divisors (1069425802).

2136321998 is a wasteful number, since it uses less digits than its factorization.

2136321998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421602.

The product of its digits is 139968, while the sum is 44.

The square root of 2136321998 is about 46220.3634559487. The cubic root of 2136321998 is about 1287.9200498031.

The spelling of 2136321998 in words is "two billion, one hundred thirty-six million, three hundred twenty-one thousand, nine hundred ninety-eight".