1081072618 has 4 divisors (see below), whose sum is σ = 1621608930. Its totient is φ = 540536308.

The previous prime is 1081072609. The next prime is 1081072627. The reversal of 1081072618 is 8162701801.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1081072609) and next prime (1081072627).

It can be written as a sum of positive squares in only one way, i.e., 952771689 + 128300929 = 30867^2 + 11327^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270268153 + ... + 270268156.

Almost surely, 2^1081072618 is an apocalyptic number.

1081072618 is a deficient number, since it is larger than the sum of its proper divisors (540536312).

1081072618 is an equidigital number, since it uses as much as digits as its factorization.

1081072618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540536311.

The product of its (nonzero) digits is 5376, while the sum is 34.

The square root of 1081072618 is about 32879.6687635384. The cubic root of 1081072618 is about 1026.3251132116.

The spelling of 1081072618 in words is "one billion, eighty-one million, seventy-two thousand, six hundred eighteen".