1065551818 has 16 divisors (see below), whose sum is σ = 1618030080. Its totient is φ = 526234000.

The previous prime is 1065551801. The next prime is 1065551819. The reversal of 1065551818 is 8181555601.

It is a super-2 number, since 2×1065551818² = 2270801353686210248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1065551819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80943 + ... + 93181.

It is an arithmetic number, because the mean of its divisors is an integer number (101126880).

Almost surely, 2^1065551818 is an apocalyptic number.

1065551818 is a deficient number, since it is larger than the sum of its proper divisors (552478262).

1065551818 is a wasteful number, since it uses less digits than its factorization.

1065551818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12773.

The product of its (nonzero) digits is 48000, while the sum is 40.

The square root of 1065551818 is about 32642.7912103117. The cubic root of 1065551818 is about 1021.3898195004.

The spelling of 1065551818 in words is "one billion, sixty-five million, five hundred fifty-one thousand, eight hundred eighteen".