1531642093 has 2 divisors, whose sum is σ = 1531642094. Its totient is φ = 1531642092.

The previous prime is 1531642061. The next prime is 1531642097. The reversal of 1531642093 is 3902461351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1227941764 + 303700329 = 35042^2 + 17427^2 .

It is a cyclic number.

It is not a de Polignac number, because 1531642093 - 2⁵ = 1531642061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1531642097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765821046 + 765821047.

It is an arithmetic number, because the mean of its divisors is an integer number (765821047).

Almost surely, 2^1531642093 is an apocalyptic number.

It is an amenable number.

1531642093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1531642093 is an equidigital number, since it uses as much as digits as its factorization.

1531642093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 1531642093 is about 39136.1992661526. The cubic root of 1531642093 is about 1152.7074439275.

The spelling of 1531642093 in words is "one billion, five hundred thirty-one million, six hundred forty-two thousand, ninety-three".