161447434 has 8 divisors (see below), whose sum is σ = 246740580. Its totient is φ = 79200576.

The previous prime is 161447399. The next prime is 161447449. The reversal of 161447434 is 434744161.

It can be written as a sum of positive squares in 2 ways, for example, as 161366209 + 81225 = 12703^2 + 285^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 161447434.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761439 + ... + 761650.

Almost surely, 2^161447434 is an apocalyptic number.

161447434 is a deficient number, since it is larger than the sum of its proper divisors (85293146).

161447434 is a wasteful number, since it uses less digits than its factorization.

161447434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523144.

The product of its digits is 32256, while the sum is 34.

The square root of 161447434 is about 12706.1966772123. The cubic root of 161447434 is about 544.5156699296.

The spelling of 161447434 in words is "one hundred sixty-one million, four hundred forty-seven thousand, four hundred thirty-four".