163972973810 has 16 divisors (see below), whose sum is σ = 295158729600. Its totient is φ = 65587550256.

The previous prime is 163972973789. The next prime is 163972973831. The reversal of 163972973810 is 18379279361.

It is an interprime number because it is at equal distance from previous prime (163972973789) and next prime (163972973831).

It is a super-2 number, since 2×163972973810² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266951 + ... + 631829.

It is an arithmetic number, because the mean of its divisors is an integer number (18447420600).

Almost surely, 2^163972973810 is an apocalyptic number.

163972973810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163972973810 is a deficient number, since it is larger than the sum of its proper divisors (131185755790).

163972973810 is a wasteful number, since it uses less digits than its factorization.

163972973810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409825.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The spelling of 163972973810 in words is "one hundred sixty-three billion, nine hundred seventy-two million, nine hundred seventy-three thousand, eight hundred ten".