16161632 has 12 divisors (see below), whose sum is σ = 31818276. Its totient is φ = 8080800.

The previous prime is 16161631. The next prime is 16161641. The reversal of 16161632 is 23616161.

It is a super-2 number, since 2×16161632² = 522396697806848, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16161631) 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, 252494 + ... + 252557.

It is an arithmetic number, because the mean of its divisors is an integer number (2651523).

Almost surely, 2^16161632 is an apocalyptic number.

It is an amenable number.

16161632 is a deficient number, since it is larger than the sum of its proper divisors (15656644).

16161632 is an equidigital number, since it uses as much as digits as its factorization.

16161632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505061 (or 505053 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

The square root of 16161632 is about 4020.1532309105. The cubic root of 16161632 is about 252.8298835047.

Adding to 16161632 its reverse (23616161), we get a palindrome (39777793).

The spelling of 16161632 in words is "sixteen million, one hundred sixty-one thousand, six hundred thirty-two".