161029648 has 20 divisors (see below), whose sum is σ = 335994988. Its totient is φ = 74321280.

The previous prime is 161029643. The next prime is 161029657. The reversal of 161029648 is 846920161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11505664 + 149523984 = 3392^2 + 12228^2 .

It is not an unprimeable number, because it can be changed into a prime (161029643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386883 + ... + 387298.

Almost surely, 2^161029648 is an apocalyptic number.

It is an amenable number.

161029648 is an abundant number, since it is smaller than the sum of its proper divisors (174965340).

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

161029648 is a wasteful number, since it uses less digits than its factorization.

161029648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774202 (or 774196 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 161029648 is about 12689.7457815356. The cubic root of 161029648 is about 544.0455736041.

The spelling of 161029648 in words is "one hundred sixty-one million, twenty-nine thousand, six hundred forty-eight".