1000890064445 has 4 divisors (see below), whose sum is σ = 1201068077340. Its totient is φ = 800712051552.

The previous prime is 1000890064439. The next prime is 1000890064453. The reversal of 1000890064445 is 5444600980001.

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 173450592676 + 827439471769 = 416474^2 + 909637^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000890064445 - 2¹⁴ = 1000890048061 is a prime.

It is a super-2 number, since 2×1000890064445² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100089006440 + ... + 100089006449.

It is an arithmetic number, because the mean of its divisors is an integer number (300267019335).

Almost surely, 2^{1000890064445} is an apocalyptic number.

It is an amenable number.

1000890064445 is a deficient number, since it is larger than the sum of its proper divisors (200178012895).

1000890064445 is an equidigital number, since it uses as much as digits as its factorization.

1000890064445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200178012894.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 1000890064445 in words is "one trillion, eight hundred ninety million, sixty-four thousand, four hundred forty-five".