1825173139 has 2 divisors, whose sum is σ = 1825173140. Its totient is φ = 1825173138.

The previous prime is 1825173127. The next prime is 1825173149. The reversal of 1825173139 is 9313715281.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1825173139 - 2¹¹ = 1825171091 is a prime.

It is a super-2 number, since 2×1825173139² = 6662513974654226642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1825173149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 912586569 + 912586570.

It is an arithmetic number, because the mean of its divisors is an integer number (912586570).

Almost surely, 2^1825173139 is an apocalyptic number.

1825173139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1825173139 is an equidigital number, since it uses as much as digits as its factorization.

1825173139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 1825173139 is about 42722.0451172460. The cubic root of 1825173139 is about 1222.0848386538.

The spelling of 1825173139 in words is "one billion, eight hundred twenty-five million, one hundred seventy-three thousand, one hundred thirty-nine".