1118149665 has 16 divisors (see below), whose sum is σ = 1850731200. Its totient is φ = 575782592.

The previous prime is 1118149661. The next prime is 1118149673. The reversal of 1118149665 is 5669418111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1118149665 - 2² = 1118149661 is a prime.

It is a super-2 number, since 2×1118149665² = 2500517346679224450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1118149661) 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, 1284795 + ... + 1285664.

It is an arithmetic number, because the mean of its divisors is an integer number (115670700).

Almost surely, 2^1118149665 is an apocalyptic number.

1118149665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1118149665 is a deficient number, since it is larger than the sum of its proper divisors (732581535).

1118149665 is a wasteful number, since it uses less digits than its factorization.

1118149665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570496.

The product of its digits is 51840, while the sum is 42.

The square root of 1118149665 is about 33438.7449674775. The cubic root of 1118149665 is about 1037.9266090945.

The spelling of 1118149665 in words is "one billion, one hundred eighteen million, one hundred forty-nine thousand, six hundred sixty-five".