1118837644 has 6 divisors (see below), whose sum is σ = 1957965884. Its totient is φ = 559418820.

The previous prime is 1118837627. The next prime is 1118837653. The reversal of 1118837644 is 4467388111.

It is a self number, because there is not a number n which added to its sum of digits gives 1118837644.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139854702 + ... + 139854709.

Almost surely, 2^1118837644 is an apocalyptic number.

It is an amenable number.

1118837644 is a deficient number, since it is larger than the sum of its proper divisors (839128240).

1118837644 is a wasteful number, since it uses less digits than its factorization.

1118837644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279709415 (or 279709413 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 1118837644 is about 33449.0305390156. The cubic root of 1118837644 is about 1038.1394384771.

The spelling of 1118837644 in words is "one billion, one hundred eighteen million, eight hundred thirty-seven thousand, six hundred forty-four".