161947104 has 48 divisors (see below), whose sum is σ = 463760640. Its totient is φ = 49074560.

The previous prime is 161947103. The next prime is 161947129. The reversal of 161947104 is 401749161.

161947104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161947103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75624 + ... + 77735.

It is an arithmetic number, because the mean of its divisors is an integer number (9661680).

Almost surely, 2^161947104 is an apocalyptic number.

It is an amenable number.

161947104 is an abundant number, since it is smaller than the sum of its proper divisors (301813536).

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

161947104 is a wasteful number, since it uses less digits than its factorization.

161947104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153383 (or 153375 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 161947104 is about 12725.8439405801. The cubic root of 161947104 is about 545.0768390384.

The spelling of 161947104 in words is "one hundred sixty-one million, nine hundred forty-seven thousand, one hundred four".