2031557950889 has 4 divisors (see below), whose sum is σ = 2031592284756. Its totient is φ = 2031523617024.

The previous prime is 2031557950871. The next prime is 2031557950913. The reversal of 2031557950889 is 9880597551302.

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 537765555625 + 1493792395264 = 733325^2 + 1222208^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031557950889 - 2⁸ = 2031557950633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2031557950189) 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 3 ways as a sum of consecutive naturals, for example, 17078024 + ... + 17196569.

It is an arithmetic number, because the mean of its divisors is an integer number (507898071189).

Almost surely, 2^{2031557950889} is an apocalyptic number.

It is an amenable number.

2031557950889 is a deficient number, since it is larger than the sum of its proper divisors (34333867).

2031557950889 is an equidigital number, since it uses as much as digits as its factorization.

2031557950889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34333866.

The product of its (nonzero) digits is 27216000, while the sum is 62.

The spelling of 2031557950889 in words is "two trillion, thirty-one billion, five hundred fifty-seven million, nine hundred fifty thousand, eight hundred eighty-nine".