163073972 has 6 divisors (see below), whose sum is σ = 285379458. Its totient is φ = 81536984.

The previous prime is 163073971. The next prime is 163073983. The reversal of 163073972 is 279370361.

It can be written as a sum of positive squares in only one way, i.e., 118504996 + 44568976 = 10886^2 + 6676^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163073971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20384243 + ... + 20384250.

It is an arithmetic number, because the mean of its divisors is an integer number (47563243).

Almost surely, 2^163073972 is an apocalyptic number.

It is an amenable number.

163073972 is a deficient number, since it is larger than the sum of its proper divisors (122305486).

163073972 is a wasteful number, since it uses less digits than its factorization.

163073972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40768497 (or 40768495 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 38.

The square root of 163073972 is about 12770.0419733061. The cubic root of 163073972 is about 546.3381777929.

The spelling of 163073972 in words is "one hundred sixty-three million, seventy-three thousand, nine hundred seventy-two".