161430188746 has 16 divisors (see below), whose sum is σ = 246264389280. Its totient is φ = 79342225200.

The previous prime is 161430188729. The next prime is 161430188747. The reversal of 161430188746 is 647881034161.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 161430188746.

It is not an unprimeable number, because it can be changed into a prime (161430188747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2642620 + ... + 2703016.

It is an arithmetic number, because the mean of its divisors is an integer number (15391524330).

Almost surely, 2^161430188746 is an apocalyptic number.

161430188746 is a deficient number, since it is larger than the sum of its proper divisors (84834200534).

161430188746 is a wasteful number, since it uses less digits than its factorization.

161430188746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83109.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 161430188746 in words is "one hundred sixty-one billion, four hundred thirty million, one hundred eighty-eight thousand, seven hundred forty-six".