1672506545 has 8 divisors (see below), whose sum is σ = 2007294696. Its totient is φ = 1337814016.

The previous prime is 1672506527. The next prime is 1672506547. The reversal of 1672506545 is 5456052761.

It can be written as a sum of positive squares in 4 ways, for example, as 1058656369 + 613850176 = 32537^2 + 24776^2 .

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 1672506545 - 2¹⁴ = 1672490161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1672506547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22919 + ... + 62211.

It is an arithmetic number, because the mean of its divisors is an integer number (250911837).

Almost surely, 2^1672506545 is an apocalyptic number.

It is an amenable number.

1672506545 is a deficient number, since it is larger than the sum of its proper divisors (334788151).

1672506545 is an equidigital number, since it uses as much as digits as its factorization.

1672506545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47811.

The product of its (nonzero) digits is 252000, while the sum is 41.

The square root of 1672506545 is about 40896.2901129186. The cubic root of 1672506545 is about 1187.0142755150.

The spelling of 1672506545 in words is "one billion, six hundred seventy-two million, five hundred six thousand, five hundred forty-five".