161870446 has 8 divisors (see below), whose sum is σ = 243256104. Its totient is φ = 80785080.

The previous prime is 161870411. The next prime is 161870461. The reversal of 161870446 is 644078161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73720 + ... + 75883.

It is an arithmetic number, because the mean of its divisors is an integer number (30407013).

Almost surely, 2^161870446 is an apocalyptic number.

161870446 is a deficient number, since it is larger than the sum of its proper divisors (81385658).

161870446 is a wasteful number, since it uses less digits than its factorization.

161870446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150146.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 161870446 is about 12722.8316816658. The cubic root of 161870446 is about 544.9908210445.

The spelling of 161870446 in words is "one hundred sixty-one million, eight hundred seventy thousand, four hundred forty-six".