161464859 has 4 divisors (see below), whose sum is σ = 161794200. Its totient is φ = 161135520.

The previous prime is 161464843. The next prime is 161464883. The reversal of 161464859 is 958464161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161464859 - 2⁴ = 161464843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161464889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163934 + ... + 164915.

It is an arithmetic number, because the mean of its divisors is an integer number (40448550).

Almost surely, 2^161464859 is an apocalyptic number.

161464859 is a deficient number, since it is larger than the sum of its proper divisors (329341).

161464859 is an equidigital number, since it uses as much as digits as its factorization.

161464859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329340.

The product of its digits is 207360, while the sum is 44.

The square root of 161464859 is about 12706.8823477673. The cubic root of 161464859 is about 544.5352590593.

The spelling of 161464859 in words is "one hundred sixty-one million, four hundred sixty-four thousand, eight hundred fifty-nine".