1672256109 has 8 divisors (see below), whose sum is σ = 2239498080. Its totient is φ = 1109925776.

The previous prime is 1672256083. The next prime is 1672256143. The reversal of 1672256109 is 9016522761.

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

It is a cyclic number.

It is not a de Polignac number, because 1672256109 - 2⁵ = 1672256077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672256189) 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, 1227114 + ... + 1228475.

It is an arithmetic number, because the mean of its divisors is an integer number (279937260).

Almost surely, 2^1672256109 is an apocalyptic number.

It is an amenable number.

1672256109 is a deficient number, since it is larger than the sum of its proper divisors (567241971).

1672256109 is a wasteful number, since it uses less digits than its factorization.

1672256109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455819.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 1672256109 is about 40893.2281557717. The cubic root of 1672256109 is about 1186.9550259321.

The spelling of 1672256109 in words is "one billion, six hundred seventy-two million, two hundred fifty-six thousand, one hundred nine".