2031888545 has 4 divisors (see below), whose sum is σ = 2438266260. Its totient is φ = 1625510832.

The previous prime is 2031888539. The next prime is 2031888667. The reversal of 2031888545 is 5458881302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1568476816 + 463411729 = 39604^2 + 21527^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031888545 - 2¹⁶ = 2031823009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2031888496 and 2031888505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203188850 + ... + 203188859.

It is an arithmetic number, because the mean of its divisors is an integer number (609566565).

Almost surely, 2^2031888545 is an apocalyptic number.

It is an amenable number.

2031888545 is a deficient number, since it is larger than the sum of its proper divisors (406377715).

2031888545 is an equidigital number, since it uses as much as digits as its factorization.

2031888545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406377714.

The product of its (nonzero) digits is 307200, while the sum is 44.

The square root of 2031888545 is about 45076.4744073890. The cubic root of 2031888545 is about 1266.5819481274.

The spelling of 2031888545 in words is "two billion, thirty-one million, eight hundred eighty-eight thousand, five hundred forty-five".