161443480 has 32 divisors (see below), whose sum is σ = 396271440. Its totient is φ = 58706560.

The previous prime is 161443453. The next prime is 161443481. The reversal of 161443480 is 84344161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161443481) 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, 183019 + ... + 183898.

Almost surely, 2^161443480 is an apocalyptic number.

161443480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161443480 is an abundant number, since it is smaller than the sum of its proper divisors (234827960).

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

161443480 is a wasteful number, since it uses less digits than its factorization.

161443480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366939 (or 366935 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 161443480 is about 12706.0410828865. The cubic root of 161443480 is about 544.5112246591.

The spelling of 161443480 in words is "one hundred sixty-one million, four hundred forty-three thousand, four hundred eighty".