161852949 has 24 divisors (see below), whose sum is σ = 238290624. Its totient is φ = 105840000.

The previous prime is 161852927. The next prime is 161852959. The reversal of 161852949 is 949258161.

161852949 is a `hidden beast` number, since 1 + 618 + 5 + 29 + 4 + 9 = 666.

161852949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161852949 - 2⁸ = 161852693 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161852959) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153474 + ... + 154524.

It is an arithmetic number, because the mean of its divisors is an integer number (9928776).

Almost surely, 2^161852949 is an apocalyptic number.

It is an amenable number.

161852949 is a deficient number, since it is larger than the sum of its proper divisors (76437675).

161852949 is a wasteful number, since it uses less digits than its factorization.

161852949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369 (or 1366 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 161852949 is about 12722.1440410019. The cubic root of 161852949 is about 544.9711838424.

The spelling of 161852949 in words is "one hundred sixty-one million, eight hundred fifty-two thousand, nine hundred forty-nine".