1673544461 has 4 divisors (see below), whose sum is σ = 1685760252. Its totient is φ = 1661328672.

The previous prime is 1673544443. The next prime is 1673544473. The reversal of 1673544461 is 1644453761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1644453761 = 6691 ⋅245771.

It can be written as a sum of positive squares in 2 ways, for example, as 650760100 + 1022784361 = 25510^2 + 31981^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1673544461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673544401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6107690 + ... + 6107963.

It is an arithmetic number, because the mean of its divisors is an integer number (421440063).

Almost surely, 2^1673544461 is an apocalyptic number.

It is an amenable number.

1673544461 is a deficient number, since it is larger than the sum of its proper divisors (12215791).

1673544461 is a wasteful number, since it uses less digits than its factorization.

1673544461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12215790.

The product of its digits is 241920, while the sum is 41.

The square root of 1673544461 is about 40908.9777555001. The cubic root of 1673544461 is about 1187.2597685937.

The spelling of 1673544461 in words is "one billion, six hundred seventy-three million, five hundred forty-four thousand, four hundred sixty-one".