161478 has 12 divisors (see below), whose sum is σ = 349908. Its totient is φ = 53820.

The previous prime is 161471. The next prime is 161503. The reversal of 161478 is 874161.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 161478.

It is not an unprimeable number, because it can be changed into a prime (161471) by changing a digit.

161478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4468 + ... + 4503.

It is an arithmetic number, because the mean of its divisors is an integer number (29159).

2¹⁶¹⁴⁷⁸ is an apocalyptic number.

161478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

161478 is an abundant number, since it is smaller than the sum of its proper divisors (188430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161478 is a wasteful number, since it uses less digits than its factorization.

161478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8979 (or 8976 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 161478 is about 401.8432530229. The cubic root of 161478 is about 54.4550031198.

The spelling of 161478 in words is "one hundred sixty-one thousand, four hundred seventy-eight".