2146545549 has 16 divisors (see below), whose sum is σ = 3190240000. Its totient is φ = 1426452768.

The previous prime is 2146545523. The next prime is 2146545563. The reversal of 2146545549 is 9455456412.

2146545549 is a `hidden beast` number, since 2 + 1 + 4 + 65 + 45 + 549 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-2146545549 is a prime.

It is a super-2 number, since 2×2146545549² = 9215315587863422802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2146545589) 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, 118549 + ... + 135450.

It is an arithmetic number, because the mean of its divisors is an integer number (199390000).

Almost surely, 2^2146545549 is an apocalyptic number.

It is an amenable number.

2146545549 is a deficient number, since it is larger than the sum of its proper divisors (1043694451).

2146545549 is a wasteful number, since it uses less digits than its factorization.

2146545549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254321 (or 254315 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The square root of 2146545549 is about 46330.8271996087. The cubic root of 2146545549 is about 1289.9712649089.

The spelling of 2146545549 in words is "two billion, one hundred forty-six million, five hundred forty-five thousand, five hundred forty-nine".