161540046 has 12 divisors (see below), whose sum is σ = 350003472. Its totient is φ = 53846676.

The previous prime is 161539997. The next prime is 161540047. The reversal of 161540046 is 640045161.

161540046 is a `hidden beast` number, since 1 + 615 + 4 + 0 + 0 + 46 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161540047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4487206 + ... + 4487241.

It is an arithmetic number, because the mean of its divisors is an integer number (29166956).

Almost surely, 2^161540046 is an apocalyptic number.

161540046 is an abundant number, since it is smaller than the sum of its proper divisors (188463426).

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

161540046 is a wasteful number, since it uses less digits than its factorization.

161540046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8974455 (or 8974452 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 161540046 is about 12709.8405182756. The cubic root of 161540046 is about 544.6197678899.

The spelling of 161540046 in words is "one hundred sixty-one million, five hundred forty thousand, forty-six".