161651350 has 24 divisors (see below), whose sum is σ = 343625328. Its totient is φ = 55423200.

The previous prime is 161651339. The next prime is 161651387. The reversal of 161651350 is 53156161.

161651350 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161651350² = 52262317913645000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 230581 + ... + 231280.

It is an arithmetic number, because the mean of its divisors is an integer number (14317722).

Almost surely, 2^161651350 is an apocalyptic number.

161651350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161651350 is an abundant number, since it is smaller than the sum of its proper divisors (181973978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161651350 is a wasteful number, since it uses less digits than its factorization.

161651350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461880 (or 461875 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 161651350 is about 12714.2184187625. The cubic root of 161651350 is about 544.7448234475.

It can be divided in two parts, 161 and 651350, that added together give a triangular number (651511 = T₁₁₄₁).

The spelling of 161651350 in words is "one hundred sixty-one million, six hundred fifty-one thousand, three hundred fifty".