161466789 has 32 divisors (see below), whose sum is σ = 239791104. Its totient is φ = 95828480.

The previous prime is 161466787. The next prime is 161466791. The reversal of 161466789 is 987664161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (161466787) and next prime (161466791).

It is not a de Polignac number, because 161466789 - 2¹ = 161466787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161466787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 457237 + ... + 457589.

It is an arithmetic number, because the mean of its divisors is an integer number (7493472).

Almost surely, 2^161466789 is an apocalyptic number.

It is an amenable number.

161466789 is a deficient number, since it is larger than the sum of its proper divisors (78324315).

161466789 is a wasteful number, since it uses less digits than its factorization.

161466789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617.

The product of its digits is 435456, while the sum is 48.

The square root of 161466789 is about 12706.9582906375. The cubic root of 161466789 is about 544.5374286725.

The spelling of 161466789 in words is "one hundred sixty-one million, four hundred sixty-six thousand, seven hundred eighty-nine".