2381532686173 has 2 divisors, whose sum is σ = 2381532686174. Its totient is φ = 2381532686172.

The previous prime is 2381532686111. The next prime is 2381532686189. The reversal of 2381532686173 is 3716862351832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1975562369209 + 405970316964 = 1405547^2 + 637158^2 .

It is a cyclic number.

It is not a de Polignac number, because 2381532686173 - 2⁹ = 2381532685661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2381532626173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1190766343086 + 1190766343087.

It is an arithmetic number, because the mean of its divisors is an integer number (1190766343087).

Almost surely, 2^{2381532686173} is an apocalyptic number.

It is an amenable number.

2381532686173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381532686173 is an equidigital number, since it uses as much as digits as its factorization.

2381532686173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 55.

The spelling of 2381532686173 in words is "two trillion, three hundred eighty-one billion, five hundred thirty-two million, six hundred eighty-six thousand, one hundred seventy-three".