2122154858 has 8 divisors (see below), whose sum is σ = 3184642020. Its totient is φ = 1060607520.

The previous prime is 2122154831. The next prime is 2122154891. The reversal of 2122154858 is 8584512212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2067793729 + 54361129 = 45473^2 + 7373^2 .

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, 229283 + ... + 238358.

Almost surely, 2^2122154858 is an apocalyptic number.

2122154858 is a deficient number, since it is larger than the sum of its proper divisors (1062487162).

2122154858 is a wasteful number, since it uses less digits than its factorization.

2122154858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469912.

The product of its digits is 51200, while the sum is 38.

The square root of 2122154858 is about 46066.8520522078. The cubic root of 2122154858 is about 1285.0667617107.

The spelling of 2122154858 in words is "two billion, one hundred twenty-two million, one hundred fifty-four thousand, eight hundred fifty-eight".