1672545857 has 8 divisors (see below), whose sum is σ = 1729541376. Its totient is φ = 1616492592.

The previous prime is 1672545839. The next prime is 1672545859. The reversal of 1672545857 is 7585452761.

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 1672545857 - 2¹⁰ = 1672544833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1672545859) 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, 231953 + ... + 239054.

It is an arithmetic number, because the mean of its divisors is an integer number (216192672).

Almost surely, 2^1672545857 is an apocalyptic number.

It is an amenable number.

1672545857 is a deficient number, since it is larger than the sum of its proper divisors (56995519).

1672545857 is an equidigital number, since it uses as much as digits as its factorization.

1672545857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471127.

The product of its digits is 2352000, while the sum is 50.

The square root of 1672545857 is about 40896.7707404876. The cubic root of 1672545857 is about 1187.0235756360.

The spelling of 1672545857 in words is "one billion, six hundred seventy-two million, five hundred forty-five thousand, eight hundred fifty-seven".