20037746249 has 8 divisors (see below), whose sum is σ = 20169900168. Its totient is φ = 19905649920.

The previous prime is 20037746221. The next prime is 20037746251. The reversal of 20037746249 is 94264773002.

It can be written as a sum of positive squares in 4 ways, for example, as 836655625 + 19201090624 = 28925^2 + 138568^2 .

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 20037746249 - 2²⁰ = 20036697673 is a prime.

It is a super-2 number, since 2×20037746249² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20037746219) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 855239 + ... + 878355.

It is an arithmetic number, because the mean of its divisors is an integer number (2521237521).

Almost surely, 2^20037746249 is an apocalyptic number.

It is an amenable number.

20037746249 is a deficient number, since it is larger than the sum of its proper divisors (132153919).

20037746249 is a wasteful number, since it uses less digits than its factorization.

20037746249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28795.

The product of its (nonzero) digits is 508032, while the sum is 44.

The spelling of 20037746249 in words is "twenty billion, thirty-seven million, seven hundred forty-six thousand, two hundred forty-nine".