164172493954 has 16 divisors (see below), whose sum is σ = 281514163968. Its totient is φ = 70340739552.

The previous prime is 164172493951. The next prime is 164172493973. The reversal of 164172493954 is 459394271461.

It is a junction number, because it is equal to n+sod(n) for n = 164172493895 and 164172493904.

It is not an unprimeable number, because it can be changed into a prime (164172493951) by changing a digit.

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, 1521019 + ... + 1625374.

It is an arithmetic number, because the mean of its divisors is an integer number (17594635248).

Almost surely, 2^164172493954 is an apocalyptic number.

164172493954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

164172493954 is a deficient number, since it is larger than the sum of its proper divisors (117341670014).

164172493954 is a wasteful number, since it uses less digits than its factorization.

164172493954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3150129.

The product of its digits is 6531840, while the sum is 55.

The spelling of 164172493954 in words is "one hundred sixty-four billion, one hundred seventy-two million, four hundred ninety-three thousand, nine hundred fifty-four".