281964249 has 12 divisors (see below), whose sum is σ = 465464896. Its totient is φ = 161122392.

The previous prime is 281964239. The next prime is 281964259. The reversal of 281964249 is 942469182.

It is an interprime number because it is at equal distance from previous prime (281964239) and next prime (281964259).

It is not a de Polignac number, because 281964249 - 2¹² = 281960153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (281964229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2237749 + ... + 2237874.

Almost surely, 2^281964249 is an apocalyptic number.

It is an amenable number.

281964249 is a deficient number, since it is larger than the sum of its proper divisors (183500647).

281964249 is a wasteful number, since it uses less digits than its factorization.

281964249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4475636 (or 4475633 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 281964249 is about 16791.7911194726. The cubic root of 281964249 is about 655.7395054673.

The spelling of 281964249 in words is "two hundred eighty-one million, nine hundred sixty-four thousand, two hundred forty-nine".