161256038 has 8 divisors (see below), whose sum is σ = 242922888. Its totient is φ = 80281744.

The previous prime is 161256031. The next prime is 161256047. The reversal of 161256038 is 830652161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 161255995 and 161256013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161256031) 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, 172556 + ... + 173487.

It is an arithmetic number, because the mean of its divisors is an integer number (30365361).

Almost surely, 2^161256038 is an apocalyptic number.

161256038 is a deficient number, since it is larger than the sum of its proper divisors (81666850).

161256038 is a wasteful number, since it uses less digits than its factorization.

161256038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346278.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 161256038 is about 12698.6628429926. The cubic root of 161256038 is about 544.3004103261.

The spelling of 161256038 in words is "one hundred sixty-one million, two hundred fifty-six thousand, thirty-eight".