4139637345 has 36 divisors (see below), whose sum is σ = 7313533500. Its totient is φ = 2166083712.

The previous prime is 4139637317. The next prime is 4139637371. The reversal of 4139637345 is 5437369314.

4139637345 is a `hidden beast` number, since 4 + 1 + 3 + 9 + 637 + 3 + 4 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 3732624 + 4135904721 = 1932^2 + 64311^2 .

It is not a de Polignac number, because 4139637345 - 2²¹ = 4137540193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 4139637345.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 110031 + ... + 142779.

Almost surely, 2^4139637345 is an apocalyptic number.

4139637345 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4139637345 is a deficient number, since it is larger than the sum of its proper divisors (3173896155).

4139637345 is a wasteful number, since it uses less digits than its factorization.

4139637345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32866 (or 32810 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 4139637345 is about 64340.0135607695. The cubic root of 4139637345 is about 1605.6618867295.

The spelling of 4139637345 in words is "four billion, one hundred thirty-nine million, six hundred thirty-seven thousand, three hundred forty-five".