1654566041 has 4 divisors (see below), whose sum is σ = 1665523584. Its totient is φ = 1643608500.

The previous prime is 1654565993. The next prime is 1654566049. The reversal of 1654566041 is 1406654561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1406654561 = 13 ⋅108204197.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1654566041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1654565986 and 1654566004.

It is not an unprimeable number, because it can be changed into a prime (1654566049) 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, 5478545 + ... + 5478846.

It is an arithmetic number, because the mean of its divisors is an integer number (416380896).

Almost surely, 2^1654566041 is an apocalyptic number.

It is an amenable number.

1654566041 is a deficient number, since it is larger than the sum of its proper divisors (10957543).

1654566041 is a wasteful number, since it uses less digits than its factorization.

1654566041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10957542.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 1654566041 is about 40676.3572729909. The cubic root of 1654566041 is about 1182.7547534748.

The spelling of 1654566041 in words is "one billion, six hundred fifty-four million, five hundred sixty-six thousand, forty-one".