1673973653 has 12 divisors (see below), whose sum is σ = 1841273280. Its totient is φ = 1520731080.

The previous prime is 1673973607. The next prime is 1673973661. The reversal of 1673973653 is 3563793761.

It is not a de Polignac number, because 1673973653 - 2⁶ = 1673973589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673973683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207428 + ... + 215346.

It is an arithmetic number, because the mean of its divisors is an integer number (153439440).

Almost surely, 2^1673973653 is an apocalyptic number.

It is an amenable number.

1673973653 is a deficient number, since it is larger than the sum of its proper divisors (167299627).

1673973653 is a wasteful number, since it uses less digits than its factorization.

1673973653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9688 (or 9677 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 50.

The square root of 1673973653 is about 40914.2231137290. The cubic root of 1673973653 is about 1187.3612535662.

The spelling of 1673973653 in words is "one billion, six hundred seventy-three million, nine hundred seventy-three thousand, six hundred fifty-three".