181596049 has 2 divisors, whose sum is σ = 181596050. Its totient is φ = 181596048.

The previous prime is 181596043. The next prime is 181596059. The reversal of 181596049 is 940695181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162103824 + 19492225 = 12732^2 + 4415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-181596049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 181595996 and 181596014.

It is not a weakly prime, because it can be changed into another prime (181596043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90798024 + 90798025.

It is an arithmetic number, because the mean of its divisors is an integer number (90798025).

Almost surely, 2^181596049 is an apocalyptic number.

It is an amenable number.

181596049 is a deficient number, since it is larger than the sum of its proper divisors (1).

181596049 is an equidigital number, since it uses as much as digits as its factorization.

181596049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 181596049 is about 13475.7578265565. The cubic root of 181596049 is about 566.2855308286.

The spelling of 181596049 in words is "one hundred eighty-one million, five hundred ninety-six thousand, forty-nine".