654143161 has 16 divisors (see below), whose sum is σ = 781920000. Its totient is φ = 535062528.

The previous prime is 654143143. The next prime is 654143173. The reversal of 654143161 is 161341456.

It is not a de Polignac number, because 654143161 - 2¹⁵ = 654110393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654143141) 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, 67765 + ... + 76813.

It is an arithmetic number, because the mean of its divisors is an integer number (48870000).

Almost surely, 2^654143161 is an apocalyptic number.

It is an amenable number.

654143161 is a deficient number, since it is larger than the sum of its proper divisors (127776839).

654143161 is a wasteful number, since it uses less digits than its factorization.

654143161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9528.

The product of its digits is 8640, while the sum is 31.

The square root of 654143161 is about 25576.2225709740. Note that the first 3 decimals coincide. The cubic root of 654143161 is about 868.0757050812.

The spelling of 654143161 in words is "six hundred fifty-four million, one hundred forty-three thousand, one hundred sixty-one".