2145081118 has 4 divisors (see below), whose sum is σ = 3217621680. Its totient is φ = 1072540558.

The previous prime is 2145081089. The next prime is 2145081139. The reversal of 2145081118 is 8111805412.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2145081118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536270278 + ... + 536270281.

It is an arithmetic number, because the mean of its divisors is an integer number (804405420).

Almost surely, 2^2145081118 is an apocalyptic number.

2145081118 is a deficient number, since it is larger than the sum of its proper divisors (1072540562).

2145081118 is a wasteful number, since it uses less digits than its factorization.

2145081118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072540561.

The product of its (nonzero) digits is 2560, while the sum is 31.

The square root of 2145081118 is about 46315.0204361393. The cubic root of 2145081118 is about 1289.6778471637.

The spelling of 2145081118 in words is "two billion, one hundred forty-five million, eighty-one thousand, one hundred eighteen".