2118851523 has 12 divisors (see below), whose sum is σ = 3061204848. Its totient is φ = 1412271600.

The previous prime is 2118851521. The next prime is 2118851549. The reversal of 2118851523 is 3251588112.

2118851523 is a `hidden beast` number, since 2 + 1 + 1 + 88 + 51 + 523 = 666.

It is not a de Polignac number, because 2118851523 - 2¹ = 2118851521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2118851521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26161 + ... + 70157.

It is an arithmetic number, because the mean of its divisors is an integer number (255100404).

Almost surely, 2^2118851523 is an apocalyptic number.

2118851523 is a deficient number, since it is larger than the sum of its proper divisors (942353325).

2118851523 is a wasteful number, since it uses less digits than its factorization.

2118851523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49354 (or 49351 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 2118851523 is about 46030.9843800890. The cubic root of 2118851523 is about 1284.3996394087.

The spelling of 2118851523 in words is "two billion, one hundred eighteen million, eight hundred fifty-one thousand, five hundred twenty-three".