1011211618 has 8 divisors (see below), whose sum is σ = 1553813100. Its totient is φ = 493273920.

The previous prime is 1011211603. The next prime is 1011211651. The reversal of 1011211618 is 8161121101.

It can be written as a sum of positive squares in 2 ways, for example, as 1011049209 + 162409 = 31797^2 + 403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6165843 + ... + 6166006.

Almost surely, 2^1011211618 is an apocalyptic number.

1011211618 is a deficient number, since it is larger than the sum of its proper divisors (542601482).

1011211618 is a wasteful number, since it uses less digits than its factorization.

1011211618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12331892.

The product of its (nonzero) digits is 96, while the sum is 22.

The square root of 1011211618 is about 31799.5537390071. The cubic root of 1011211618 is about 1003.7233256405.

Adding to 1011211618 its reverse (8161121101), we get a palindrome (9172332719).

The spelling of 1011211618 in words is "one billion, eleven million, two hundred eleven thousand, six hundred eighteen".