4209131745 has 144 divisors (see below), whose sum is σ = 9561981312. Its totient is φ = 1671321600.

The previous prime is 4209131737. The next prime is 4209131761. The reversal of 4209131745 is 5471319024.

It is not a de Polignac number, because 4209131745 - 2³ = 4209131737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 902670 + ... + 907320.

It is an arithmetic number, because the mean of its divisors is an integer number (66402648).

Almost surely, 2^4209131745 is an apocalyptic number.

4209131745 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4209131745 is an abundant number, since it is smaller than the sum of its proper divisors (5352849567).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4209131745 is a wasteful number, since it uses less digits than its factorization.

4209131745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4712 (or 4696 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 4209131745 is about 64877.8216727411. The cubic root of 4209131745 is about 1614.5971185585.

The spelling of 4209131745 in words is "four billion, two hundred nine million, one hundred thirty-one thousand, seven hundred forty-five".