161004479 has 8 divisors (see below), whose sum is σ = 163188480. Its totient is φ = 158826456.

The previous prime is 161004463. The next prime is 161004497. The reversal of 161004479 is 974400161.

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

It is a cyclic number.

It is not a de Polignac number, because 161004479 - 2⁴ = 161004463 is a prime.

It is a super-2 number, since 2×161004479² = 51844884516122882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161004409) 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, 85304 + ... + 87170.

It is an arithmetic number, because the mean of its divisors is an integer number (20398560).

Almost surely, 2^161004479 is an apocalyptic number.

161004479 is a deficient number, since it is larger than the sum of its proper divisors (2184001).

161004479 is a wasteful number, since it uses less digits than its factorization.

161004479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2989.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 161004479 is about 12688.7540365475. The cubic root of 161004479 is about 544.0172272785.

The spelling of 161004479 in words is "one hundred sixty-one million, four thousand, four hundred seventy-nine".