1081227418 has 4 divisors (see below), whose sum is σ = 1621841130. Its totient is φ = 540613708.

The previous prime is 1081227383. The next prime is 1081227419. The reversal of 1081227418 is 8147221801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8147221801 = 251 ⋅32459051.

It can be written as a sum of positive squares in only one way, i.e., 1071449289 + 9778129 = 32733^2 + 3127^2 .

It is not an unprimeable number, because it can be changed into a prime (1081227419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270306853 + ... + 270306856.

Almost surely, 2^1081227418 is an apocalyptic number.

1081227418 is a deficient number, since it is larger than the sum of its proper divisors (540613712).

1081227418 is an equidigital number, since it uses as much as digits as its factorization.

1081227418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540613711.

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 1081227418 is about 32882.0227175884. The cubic root of 1081227418 is about 1026.3740977547.

The spelling of 1081227418 in words is "one billion, eighty-one million, two hundred twenty-seven thousand, four hundred eighteen".