2145187862 has 4 divisors (see below), whose sum is σ = 3217781796. Its totient is φ = 1072593930.

The previous prime is 2145187853. The next prime is 2145187867. The reversal of 2145187862 is 2687815412.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145187867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536296964 + ... + 536296967.

It is an arithmetic number, because the mean of its divisors is an integer number (804445449).

Almost surely, 2^2145187862 is an apocalyptic number.

2145187862 is a deficient number, since it is larger than the sum of its proper divisors (1072593934).

2145187862 is a wasteful number, since it uses less digits than its factorization.

2145187862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072593933.

The product of its digits is 215040, while the sum is 44.

The square root of 2145187862 is about 46316.1727909377. The cubic root of 2145187862 is about 1289.6992392201.

The spelling of 2145187862 in words is "two billion, one hundred forty-five million, one hundred eighty-seven thousand, eight hundred sixty-two".