1427008881 has 4 divisors (see below), whose sum is σ = 1902678512. Its totient is φ = 951339252.

The previous prime is 1427008873. The next prime is 1427008897. The reversal of 1427008881 is 1888007241.

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.

It is not a de Polignac number, because 1427008881 - 2³ = 1427008873 is a prime.

It is a super-2 number, since 2×1427008881² = 4072708692905744322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1427008801) 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, 237834811 + ... + 237834816.

It is an arithmetic number, because the mean of its divisors is an integer number (475669628).

Almost surely, 2^1427008881 is an apocalyptic number.

It is an amenable number.

1427008881 is a deficient number, since it is larger than the sum of its proper divisors (475669631).

1427008881 is an equidigital number, since it uses as much as digits as its factorization.

1427008881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475669630.

The product of its (nonzero) digits is 28672, while the sum is 39.

The square root of 1427008881 is about 37775.7710841222. The cubic root of 1427008881 is about 1125.8371069337.

The spelling of 1427008881 in words is "one billion, four hundred twenty-seven million, eight thousand, eight hundred eighty-one".