161102632 has 8 divisors (see below), whose sum is σ = 302067450. Its totient is φ = 80551312.

The previous prime is 161102611. The next prime is 161102633. The reversal of 161102632 is 236201161.

It can be written as a sum of positive squares in only one way, i.e., 152423716 + 8678916 = 12346^2 + 2946^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (161102633) by changing a digit.

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, 10068907 + ... + 10068922.

Almost surely, 2^161102632 is an apocalyptic number.

It is an amenable number.

161102632 is a deficient number, since it is larger than the sum of its proper divisors (140964818).

161102632 is a wasteful number, since it uses less digits than its factorization.

161102632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20137835 (or 20137831 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 161102632 is about 12692.6211634950. The cubic root of 161102632 is about 544.1277543813.

Adding to 161102632 its reverse (236201161), we get a palindrome (397303793).

The spelling of 161102632 in words is "one hundred sixty-one million, one hundred two thousand, six hundred thirty-two".