161653416 has 32 divisors (see below), whose sum is σ = 410762400. Its totient is φ = 53000640.

The previous prime is 161653411. The next prime is 161653417. The reversal of 161653416 is 614356161.

It is a super-2 number, since 2×161653416² = 52263653808938112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161653411) 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 7 ways as a sum of consecutive naturals, for example, 53746 + ... + 56673.

It is an arithmetic number, because the mean of its divisors is an integer number (12836325).

Almost surely, 2^161653416 is an apocalyptic number.

It is an amenable number.

161653416 is an abundant number, since it is smaller than the sum of its proper divisors (249108984).

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

161653416 is a wasteful number, since it uses less digits than its factorization.

161653416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110489 (or 110485 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 161653416 is about 12714.2996661240. The cubic root of 161653416 is about 544.7471441581.

The spelling of 161653416 in words is "one hundred sixty-one million, six hundred fifty-three thousand, four hundred sixteen".