161447415 has 8 divisors (see below), whose sum is σ = 258315888. Its totient is φ = 86105280.

The previous prime is 161447399. The next prime is 161447449. The reversal of 161447415 is 514744161.

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

It is not a de Polignac number, because 161447415 - 2⁴ = 161447399 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5381566 + ... + 5381595.

It is an arithmetic number, because the mean of its divisors is an integer number (32289486).

Almost surely, 2^161447415 is an apocalyptic number.

161447415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161447415 is a deficient number, since it is larger than the sum of its proper divisors (96868473).

161447415 is a wasteful number, since it uses less digits than its factorization.

161447415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10763169.

The product of its digits is 13440, while the sum is 33.

The square root of 161447415 is about 12706.1959295456. The cubic root of 161447415 is about 544.5156485690.

The spelling of 161447415 in words is "one hundred sixty-one million, four hundred forty-seven thousand, four hundred fifteen".