2123854198 has 8 divisors (see below), whose sum is σ = 3188868408. Its totient is φ = 1060898064.

The previous prime is 2123854177. The next prime is 2123854241. The reversal of 2123854198 is 8914583212.

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

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, 511936 + ... + 516067.

It is an arithmetic number, because the mean of its divisors is an integer number (398608551).

Almost surely, 2^2123854198 is an apocalyptic number.

2123854198 is a deficient number, since it is larger than the sum of its proper divisors (1065014210).

2123854198 is a wasteful number, since it uses less digits than its factorization.

2123854198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029038.

The product of its digits is 138240, while the sum is 43.

The square root of 2123854198 is about 46085.2926430982. The cubic root of 2123854198 is about 1285.4096808761.

The spelling of 2123854198 in words is "two billion, one hundred twenty-three million, eight hundred fifty-four thousand, one hundred ninety-eight".