1118867649 has 16 divisors (see below), whose sum is σ = 1585025280. Its totient is φ = 700045200.

The previous prime is 1118867627. The next prime is 1118867663. The reversal of 1118867649 is 9467688111.

It is not a de Polignac number, because 1118867649 - 2¹² = 1118863553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1118867689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85627 + ... + 97824.

It is an arithmetic number, because the mean of its divisors is an integer number (99064080).

Almost surely, 2^1118867649 is an apocalyptic number.

1118867649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1118867649 is a deficient number, since it is larger than the sum of its proper divisors (466157631).

1118867649 is a wasteful number, since it uses less digits than its factorization.

1118867649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183580.

The product of its digits is 580608, while the sum is 51.

The square root of 1118867649 is about 33449.4790542394. The cubic root of 1118867649 is about 1038.1487186723.

The spelling of 1118867649 in words is "one billion, one hundred eighteen million, eight hundred sixty-seven thousand, six hundred forty-nine".