2118157254 has 24 divisors (see below), whose sum is σ = 4634783712. Its totient is φ = 699061200.

The previous prime is 2118157247. The next prime is 2118157267. The reversal of 2118157254 is 4527518112.

It is a happy number.

2118157254 is a `hidden beast` number, since 2 + 1 + 1 + 81 + 572 + 5 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 580734 + ... + 584369.

It is an arithmetic number, because the mean of its divisors is an integer number (193115988).

Almost surely, 2^2118157254 is an apocalyptic number.

2118157254 is an abundant number, since it is smaller than the sum of its proper divisors (2516626458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2118157254 is a wasteful number, since it uses less digits than its factorization.

2118157254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165212 (or 1165209 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 2118157254 is about 46023.4424396959. The cubic root of 2118157254 is about 1284.2593407208.

The spelling of 2118157254 in words is "two billion, one hundred eighteen million, one hundred fifty-seven thousand, two hundred fifty-four".