16161612 has 24 divisors (see below), whose sum is σ = 37800000. Its totient is φ = 5374416.

The previous prime is 16161589. The next prime is 16161623. The reversal of 16161612 is 21616161.

It is a super-2 number, since 2×16161612² = 522395404877088, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4639 + ... + 7337.

It is an arithmetic number, because the mean of its divisors is an integer number (1575000).

Almost surely, 2^16161612 is an apocalyptic number.

16161612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16161612 is an abundant number, since it is smaller than the sum of its proper divisors (21638388).

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

16161612 is a wasteful number, since it uses less digits than its factorization.

16161612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205 (or 3203 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

The square root of 16161612 is about 4020.1507434423. The cubic root of 16161612 is about 252.8297792124.

Adding to 16161612 its reverse (21616161), we get a palindrome (37777773).

The spelling of 16161612 in words is "sixteen million, one hundred sixty-one thousand, six hundred twelve".