161356446 has 24 divisors (see below), whose sum is σ = 354532464. Its totient is φ = 53027520.

The previous prime is 161356423. The next prime is 161356513. The reversal of 161356446 is 644653161.

It is a happy number.

161356446 is a `hidden beast` number, since 1 + 6 + 1 + 3 + 5 + 644 + 6 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 161356446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61851 + ... + 64406.

It is an arithmetic number, because the mean of its divisors is an integer number (14772186).

Almost surely, 2^161356446 is an apocalyptic number.

161356446 is an abundant number, since it is smaller than the sum of its proper divisors (193176018).

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

161356446 is a wasteful number, since it uses less digits than its factorization.

161356446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126336 (or 126333 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 161356446 is about 12702.6157148833. The cubic root of 161356446 is about 544.4133586058.

The spelling of 161356446 in words is "one hundred sixty-one million, three hundred fifty-six thousand, four hundred forty-six".