245843881 has 8 divisors (see below), whose sum is σ = 248710280. Its totient is φ = 242984448.

The previous prime is 245843867. The next prime is 245843893. The reversal of 245843881 is 188348542.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10497600 + 235346281 = 3240^2 + 15341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245843881 - 2⁹ = 245843369 is a prime.

It is a super-2 number, since 2×245843881² = 120878427650284322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245843821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107215 + ... + 109483.

It is an arithmetic number, because the mean of its divisors is an integer number (31088785).

Almost surely, 2^245843881 is an apocalyptic number.

It is an amenable number.

245843881 is a deficient number, since it is larger than the sum of its proper divisors (2866399).

245843881 is a wasteful number, since it uses less digits than its factorization.

245843881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3483.

The product of its digits is 245760, while the sum is 43.

The square root of 245843881 is about 15679.4094595428. The cubic root of 245843881 is about 626.4500781554.

The spelling of 245843881 in words is "two hundred forty-five million, eight hundred forty-three thousand, eight hundred eighty-one".