163404964 has 12 divisors (see below), whose sum is σ = 286339788. Its totient is φ = 81593600.

The previous prime is 163404961. The next prime is 163405001. The reversal of 163404964 is 469404361.

163404964 = 28² + 29² + ... + 788².

It can be written as a sum of positive squares in 2 ways, for example, as 20793600 + 142611364 = 4560^2 + 11942^2 .

It is not an unprimeable number, because it can be changed into a prime (163404961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23797 + ... + 29884.

It is an arithmetic number, because the mean of its divisors is an integer number (23861649).

Almost surely, 2^163404964 is an apocalyptic number.

It is an amenable number.

163404964 is a deficient number, since it is larger than the sum of its proper divisors (122934824).

163404964 is a wasteful number, since it uses less digits than its factorization.

163404964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54446 (or 54444 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 163404964 is about 12782.9951106930. The cubic root of 163404964 is about 546.7075630387.

The spelling of 163404964 in words is "one hundred sixty-three million, four hundred four thousand, nine hundred sixty-four".