1653742673 has 16 divisors (see below), whose sum is σ = 1829848320. Its totient is φ = 1482070800.

The previous prime is 1653742637. The next prime is 1653742679. The reversal of 1653742673 is 3762473561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1653742673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1653742679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245018 + ... + 251676.

It is an arithmetic number, because the mean of its divisors is an integer number (114365520).

Almost surely, 2^1653742673 is an apocalyptic number.

It is an amenable number.

1653742673 is a deficient number, since it is larger than the sum of its proper divisors (176105647).

1653742673 is a wasteful number, since it uses less digits than its factorization.

1653742673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6988.

The product of its digits is 635040, while the sum is 44.

The square root of 1653742673 is about 40666.2350482559. The cubic root of 1653742673 is about 1182.5585280043.

The spelling of 1653742673 in words is "one billion, six hundred fifty-three million, seven hundred forty-two thousand, six hundred seventy-three".