2061191026 has 4 divisors (see below), whose sum is σ = 3091786542. Its totient is φ = 1030595512.

The previous prime is 2061191021. The next prime is 2061191081. The reversal of 2061191026 is 6201911602.

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

It can be written as a sum of positive squares in only one way, i.e., 2016099801 + 45091225 = 44901^2 + 6715^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2061190985 and 2061191003.

It is not an unprimeable number, because it can be changed into a prime (2061191021) 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 as a sum of consecutive naturals, namely, 515297755 + ... + 515297758.

Almost surely, 2^2061191026 is an apocalyptic number.

2061191026 is a deficient number, since it is larger than the sum of its proper divisors (1030595516).

2061191026 is a wasteful number, since it uses less digits than its factorization.

2061191026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030595515.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 2061191026 is about 45400.3416947494. The cubic root of 2061191026 is about 1272.6414994153.

The spelling of 2061191026 in words is "two billion, sixty-one million, one hundred ninety-one thousand, twenty-six".