161417633 has 4 divisors (see below), whose sum is σ = 173834388. Its totient is φ = 149000880.

The previous prime is 161417617. The next prime is 161417671. The reversal of 161417633 is 336714161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 336714161 = 7 ⋅48102023.

It can be written as a sum of positive squares in 2 ways, for example, as 61277584 + 100140049 = 7828^2 + 10007^2 .

It is a cyclic number.

It is not a de Polignac number, because 161417633 - 2⁴ = 161417617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161417633.

It is not an unprimeable number, because it can be changed into a prime (161417033) 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 in 3 ways as a sum of consecutive naturals, for example, 6208358 + ... + 6208383.

It is an arithmetic number, because the mean of its divisors is an integer number (43458597).

Almost surely, 2^161417633 is an apocalyptic number.

161417633 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

161417633 is a deficient number, since it is larger than the sum of its proper divisors (12416755).

161417633 is a wasteful number, since it uses less digits than its factorization.

161417633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12416754.

The product of its digits is 9072, while the sum is 32.

The square root of 161417633 is about 12705.0239275650. The cubic root of 161417633 is about 544.4821644729.

The spelling of 161417633 in words is "one hundred sixty-one million, four hundred seventeen thousand, six hundred thirty-three".