1672049849 has 4 divisors (see below), whose sum is σ = 1688604900. Its totient is φ = 1655494800.

The previous prime is 1672049831. The next prime is 1672049867. The reversal of 1672049849 is 9489402761.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1672049831) and next prime (1672049867).

It can be written as a sum of positive squares in 2 ways, for example, as 1312757824 + 359292025 = 36232^2 + 18955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1672049849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1672049797 and 1672049806.

It is not an unprimeable number, because it can be changed into a prime (1672049879) 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 3 ways as a sum of consecutive naturals, for example, 8277374 + ... + 8277575.

It is an arithmetic number, because the mean of its divisors is an integer number (422151225).

Almost surely, 2^1672049849 is an apocalyptic number.

It is an amenable number.

1672049849 is a deficient number, since it is larger than the sum of its proper divisors (16555051).

1672049849 is a wasteful number, since it uses less digits than its factorization.

1672049849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16555050.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 1672049849 is about 40890.7061445507. The cubic root of 1672049849 is about 1186.9062233177.

The spelling of 1672049849 in words is "one billion, six hundred seventy-two million, forty-nine thousand, eight hundred forty-nine".