2145717736 has 16 divisors (see below), whose sum is σ = 4074148800. Its totient is φ = 1059278064.

The previous prime is 2145717683. The next prime is 2145717757. The reversal of 2145717736 is 6377175412.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2145717692 and 2145717701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1696930 + ... + 1698193.

It is an arithmetic number, because the mean of its divisors is an integer number (254634300).

Almost surely, 2^2145717736 is an apocalyptic number.

It is an amenable number.

2145717736 is a deficient number, since it is larger than the sum of its proper divisors (1928431064).

2145717736 is a wasteful number, since it uses less digits than its factorization.

2145717736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395208 (or 3395204 counting only the distinct ones).

The product of its digits is 246960, while the sum is 43.

The square root of 2145717736 is about 46321.8926210922. The cubic root of 2145717736 is about 1289.8054182403.

It can be divided in two parts, 21457 and 17736, that added together give a palindrome (39193).

The spelling of 2145717736 in words is "two billion, one hundred forty-five million, seven hundred seventeen thousand, seven hundred thirty-six".