161338448 has 10 divisors (see below), whose sum is σ = 312593274. Its totient is φ = 80669216.

The previous prime is 161338427. The next prime is 161338459. The reversal of 161338448 is 844833161.

It can be written as a sum of positive squares in only one way, i.e., 122500624 + 38837824 = 11068^2 + 6232^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5041811 + ... + 5041842.

Almost surely, 2^161338448 is an apocalyptic number.

It is an amenable number.

161338448 is a deficient number, since it is larger than the sum of its proper divisors (151254826).

161338448 is a wasteful number, since it uses less digits than its factorization.

161338448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10083661 (or 10083655 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 161338448 is about 12701.9072583608. The cubic root of 161338448 is about 544.3931162249.

The spelling of 161338448 in words is "one hundred sixty-one million, three hundred thirty-eight thousand, four hundred forty-eight".