1146451643 has 4 divisors (see below), whose sum is σ = 1148652648. Its totient is φ = 1144250640.

The previous prime is 1146451601. The next prime is 1146451667. The reversal of 1146451643 is 3461546411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3461546411 = 10559 ⋅327829.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1146451643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1146451543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1099721 + ... + 1100762.

It is an arithmetic number, because the mean of its divisors is an integer number (287163162).

Almost surely, 2^1146451643 is an apocalyptic number.

1146451643 is a deficient number, since it is larger than the sum of its proper divisors (2201005).

1146451643 is an equidigital number, since it uses as much as digits as its factorization.

1146451643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201004.

The product of its digits is 34560, while the sum is 35.

The square root of 1146451643 is about 33859.2918266168. The cubic root of 1146451643 is about 1046.6108845660.

The spelling of 1146451643 in words is "one billion, one hundred forty-six million, four hundred fifty-one thousand, six hundred forty-three".