2039869745 has 8 divisors (see below), whose sum is σ = 2473079784. Its totient is φ = 1615071744.

The previous prime is 2039869723. The next prime is 2039869753. The reversal of 2039869745 is 5479689302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 53919649 + 1985950096 = 7343^2 + 44564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2039869745 - 2¹⁸ = 2039607601 is a prime.

It is a super-2 number, since 2×2039869745² = 8322137153132730050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2102474 + ... + 2103443.

It is an arithmetic number, because the mean of its divisors is an integer number (309134973).

Almost surely, 2^2039869745 is an apocalyptic number.

It is an amenable number.

2039869745 is a deficient number, since it is larger than the sum of its proper divisors (433210039).

2039869745 is an equidigital number, since it uses as much as digits as its factorization.

2039869745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4206019.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The square root of 2039869745 is about 45164.9171924404. The cubic root of 2039869745 is about 1268.2381473855.

The spelling of 2039869745 in words is "two billion, thirty-nine million, eight hundred sixty-nine thousand, seven hundred forty-five".