161802136 has 16 divisors (see below), whose sum is σ = 313840800. Its totient is φ = 78111264.

The previous prime is 161802061. The next prime is 161802149. The reversal of 161802136 is 631208161.

161802136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348480 + ... + 348943.

It is an arithmetic number, because the mean of its divisors is an integer number (19615050).

Almost surely, 2^161802136 is an apocalyptic number.

It is an amenable number.

161802136 is a deficient number, since it is larger than the sum of its proper divisors (152038664).

161802136 is a wasteful number, since it uses less digits than its factorization.

161802136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697458 (or 697454 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 161802136 is about 12720.1468544982. The cubic root of 161802136 is about 544.9141474619.

The spelling of 161802136 in words is "one hundred sixty-one million, eight hundred two thousand, one hundred thirty-six".