161650136 has 32 divisors (see below), whose sum is σ = 309158640. Its totient is φ = 79223808.

The previous prime is 161650133. The next prime is 161650171. The reversal of 161650136 is 631056161.

It is a super-2 number, since 2×161650136² = 52261532937636992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161650099 and 161650108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161650133) 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 7 ways as a sum of consecutive naturals, for example, 90080 + ... + 91856.

Almost surely, 2^161650136 is an apocalyptic number.

It is an amenable number.

161650136 is a deficient number, since it is larger than the sum of its proper divisors (147508504).

161650136 is a wasteful number, since it uses less digits than its factorization.

161650136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003 (or 1999 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 161650136 is about 12714.1706768472. The cubic root of 161650136 is about 544.7434597680.

The spelling of 161650136 in words is "one hundred sixty-one million, six hundred fifty thousand, one hundred thirty-six".