1122637881 has 4 divisors (see below), whose sum is σ = 1496850512. Its totient is φ = 748425252.

The previous prime is 1122637877. The next prime is 1122637883. The reversal of 1122637881 is 1887362211.

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 1122637881 - 2² = 1122637877 is a prime.

It is a super-2 number, since 2×1122637881² = 2520631623712340322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122637883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187106311 + ... + 187106316.

It is an arithmetic number, because the mean of its divisors is an integer number (374212628).

Almost surely, 2^1122637881 is an apocalyptic number.

It is an amenable number.

1122637881 is a deficient number, since it is larger than the sum of its proper divisors (374212631).

1122637881 is an equidigital number, since it uses as much as digits as its factorization.

1122637881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374212630.

The product of its digits is 32256, while the sum is 39.

The square root of 1122637881 is about 33505.7887685098. The cubic root of 1122637881 is about 1039.3134895458.

The spelling of 1122637881 in words is "one billion, one hundred twenty-two million, six hundred thirty-seven thousand, eight hundred eighty-one".