161430587 has 2 divisors, whose sum is σ = 161430588. Its totient is φ = 161430586.

The previous prime is 161430551. The next prime is 161430637. The reversal of 161430587 is 785034161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161430587 - 2⁶ = 161430523 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (161432587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80715293 + 80715294.

It is an arithmetic number, because the mean of its divisors is an integer number (80715294).

Almost surely, 2^161430587 is an apocalyptic number.

161430587 is a deficient number, since it is larger than the sum of its proper divisors (1).

161430587 is an equidigital number, since it uses as much as digits as its factorization.

161430587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 161430587 is about 12705.5337156689. The cubic root of 161430587 is about 544.4967292453.

The spelling of 161430587 in words is "one hundred sixty-one million, four hundred thirty thousand, five hundred eighty-seven".