161650683 has 6 divisors (see below), whose sum is σ = 233495444. Its totient is φ = 107767116.

The previous prime is 161650679. The next prime is 161650691. The reversal of 161650683 is 386056161.

It is a happy number.

It is not a de Polignac number, because 161650683 - 2² = 161650679 is a prime.

It is a super-2 number, since 2×161650683² = 52261886628732978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161650633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8980585 + ... + 8980602.

Almost surely, 2^161650683 is an apocalyptic number.

161650683 is a deficient number, since it is larger than the sum of its proper divisors (71844761).

161650683 is a wasteful number, since it uses less digits than its factorization.

161650683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17961193 (or 17961190 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 161650683 is about 12714.1921882595. The cubic root of 161650683 is about 544.7440742109.

The spelling of 161650683 in words is "one hundred sixty-one million, six hundred fifty thousand, six hundred eighty-three".