2145637316 has 48 divisors (see below), whose sum is σ = 3879181824. Its totient is φ = 1038064896.

The previous prime is 2145637309. The next prime is 2145637391. The reversal of 2145637316 is 6137365412.

It is a self number, because there is not a number n which added to its sum of digits gives 2145637316.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5404430 + ... + 5404826.

It is an arithmetic number, because the mean of its divisors is an integer number (80816288).

Almost surely, 2^2145637316 is an apocalyptic number.

It is an amenable number.

2145637316 is a deficient number, since it is larger than the sum of its proper divisors (1733544508).

2145637316 is a wasteful number, since it uses less digits than its factorization.

2145637316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 778 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 2145637316 is about 46321.0245568899. The cubic root of 2145637316 is about 1289.7893043707.

The spelling of 2145637316 in words is "two billion, one hundred forty-five million, six hundred thirty-seven thousand, three hundred sixteen".