1066490918 has 4 divisors (see below), whose sum is σ = 1599736380. Its totient is φ = 533245458.

The previous prime is 1066490911. The next prime is 1066490927. The reversal of 1066490918 is 8190946601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8190946601 = 5869 ⋅1395629.

It is a super-2 number, since 2×1066490918² = 2274805756352965448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066490911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266622728 + ... + 266622731.

It is an arithmetic number, because the mean of its divisors is an integer number (399934095).

Almost surely, 2^1066490918 is an apocalyptic number.

1066490918 is a deficient number, since it is larger than the sum of its proper divisors (533245462).

1066490918 is an equidigital number, since it uses as much as digits as its factorization.

1066490918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533245461.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 1066490918 is about 32657.1725352946. The cubic root of 1066490918 is about 1021.6897910004.

The spelling of 1066490918 in words is "one billion, sixty-six million, four hundred ninety thousand, nine hundred eighteen".