1000020191092 has 24 divisors (see below), whose sum is σ = 1885086421736. Its totient is φ = 461441743488.

The previous prime is 1000020191069. The next prime is 1000020191113. The reversal of 1000020191092 is 2901910200001.

It can be written as a sum of positive squares in 4 ways, for example, as 59577975396 + 940442215696 = 244086^2 + 969764^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1980363 + ... + 2433490.

Almost surely, 2^{1000020191092} is an apocalyptic number.

It is an amenable number.

1000020191092 is a deficient number, since it is larger than the sum of its proper divisors (885066230644).

1000020191092 is a wasteful number, since it uses less digits than its factorization.

1000020191092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4418227 (or 4418225 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

Adding to 1000020191092 its reverse (2901910200001), we get a palindrome (3901930391093).

The spelling of 1000020191092 in words is "one trillion, twenty million, one hundred ninety-one thousand, ninety-two".