161292448 has 12 divisors (see below), whose sum is σ = 317544570. Its totient is φ = 80646208.

The previous prime is 161292437. The next prime is 161292451. The reversal of 161292448 is 844292161.

It can be written as a sum of positive squares in only one way, i.e., 132434064 + 28858384 = 11508^2 + 5372^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2520163 + ... + 2520226.

Almost surely, 2^161292448 is an apocalyptic number.

It is an amenable number.

161292448 is a deficient number, since it is larger than the sum of its proper divisors (156252122).

161292448 is an equidigital number, since it uses as much as digits as its factorization.

161292448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5040399 (or 5040391 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 161292448 is about 12700.0963775871. The cubic root of 161292448 is about 544.3413731056.

The spelling of 161292448 in words is "one hundred sixty-one million, two hundred ninety-two thousand, four hundred forty-eight".