2089731597658 has 16 divisors (see below), whose sum is σ = 3168089291880. Its totient is φ = 1033717888000.

The previous prime is 2089731597647. The next prime is 2089731597661. The reversal of 2089731597658 is 8567951379802.

It can be written as a sum of positive squares in 4 ways, for example, as 1897332688969 + 192398908689 = 1377437^2 + 438633^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3752503 + ... + 4273258.

Almost surely, 2^{2089731597658} is an apocalyptic number.

2089731597658 is a deficient number, since it is larger than the sum of its proper divisors (1078357694222).

2089731597658 is a wasteful number, since it uses less digits than its factorization.

2089731597658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8027153.

The product of its (nonzero) digits is 228614400, while the sum is 70.

The spelling of 2089731597658 in words is "two trillion, eighty-nine billion, seven hundred thirty-one million, five hundred ninety-seven thousand, six hundred fifty-eight".