1831173061 has 2 divisors, whose sum is σ = 1831173062. Its totient is φ = 1831173060.

The previous prime is 1831173049. The next prime is 1831173067. The reversal of 1831173061 is 1603711381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 960628036 + 870545025 = 30994^2 + 29505^2 .

It is a cyclic number.

It is not a de Polignac number, because 1831173061 - 2⁷ = 1831172933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1831173067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 915586530 + 915586531.

It is an arithmetic number, because the mean of its divisors is an integer number (915586531).

Almost surely, 2^1831173061 is an apocalyptic number.

It is an amenable number.

1831173061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1831173061 is an equidigital number, since it uses as much as digits as its factorization.

1831173061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1831173061 is about 42792.2079472420. The cubic root of 1831173061 is about 1223.4225005518.

The spelling of 1831173061 in words is "one billion, eight hundred thirty-one million, one hundred seventy-three thousand, sixty-one".