2158240712 has 16 divisors (see below), whose sum is σ = 4284742860. Its totient is φ = 1015642624.

The previous prime is 2158240691. The next prime is 2158240717. The reversal of 2158240712 is 2170428512.

It can be written as a sum of positive squares in 2 ways, for example, as 1896254116 + 261986596 = 43546^2 + 16186^2 .

It is not an unprimeable number, because it can be changed into a prime (2158240717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7934573 + ... + 7934844.

Almost surely, 2^2158240712 is an apocalyptic number.

It is an amenable number.

2158240712 is a deficient number, since it is larger than the sum of its proper divisors (2126502148).

2158240712 is a wasteful number, since it uses less digits than its factorization.

2158240712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15869440 (or 15869436 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2158240712 is about 46456.8693736459. The cubic root of 2158240712 is about 1292.3097676670.

The spelling of 2158240712 in words is "two billion, one hundred fifty-eight million, two hundred forty thousand, seven hundred twelve".