1672169945 has 8 divisors (see below), whose sum is σ = 2012195520. Its totient is φ = 1334008240.

The previous prime is 1672169927. The next prime is 1672169959. The reversal of 1672169945 is 5499612761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1672169945 - 2²² = 1667975641 is a prime.

It is a super-2 number, since 2×1672169945² = 5592304649922606050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1672169893 and 1672169902.

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, 463991 + ... + 467580.

It is an arithmetic number, because the mean of its divisors is an integer number (251524440).

Almost surely, 2^1672169945 is an apocalyptic number.

It is an amenable number.

1672169945 is a deficient number, since it is larger than the sum of its proper divisors (340025575).

1672169945 is an equidigital number, since it uses as much as digits as its factorization.

1672169945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931935.

The product of its digits is 816480, while the sum is 50.

The square root of 1672169945 is about 40892.1746181345. The cubic root of 1672169945 is about 1186.9346393918.

The spelling of 1672169945 in words is "one billion, six hundred seventy-two million, one hundred sixty-nine thousand, nine hundred forty-five".