2158796398 has 16 divisors (see below), whose sum is σ = 3533304240. Its totient is φ = 981068800.

The previous prime is 2158796333. The next prime is 2158796407. The reversal of 2158796398 is 8936978512.

It is a congruent 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, 171438 + ... + 183598.

It is an arithmetic number, because the mean of its divisors is an integer number (220831515).

Almost surely, 2^2158796398 is an apocalyptic number.

2158796398 is a deficient number, since it is larger than the sum of its proper divisors (1374507842).

2158796398 is a wasteful number, since it uses less digits than its factorization.

2158796398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20243.

The product of its digits is 6531840, while the sum is 58.

The square root of 2158796398 is about 46462.8496543206. The cubic root of 2158796398 is about 1292.4206692328.

The spelling of 2158796398 in words is "two billion, one hundred fifty-eight million, seven hundred ninety-six thousand, three hundred ninety-eight".