1117564988 has 6 divisors (see below), whose sum is σ = 1955738736. Its totient is φ = 558782492.

The previous prime is 1117564979. The next prime is 1117564991. The reversal of 1117564988 is 8894657111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139695620 + ... + 139695627.

It is an arithmetic number, because the mean of its divisors is an integer number (325956456).

Almost surely, 2^1117564988 is an apocalyptic number.

It is an amenable number.

1117564988 is a deficient number, since it is larger than the sum of its proper divisors (838173748).

1117564988 is a wasteful number, since it uses less digits than its factorization.

1117564988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279391251 (or 279391249 counting only the distinct ones).

The product of its digits is 483840, while the sum is 50.

The square root of 1117564988 is about 33430.0013161830. The cubic root of 1117564988 is about 1037.7456680156.

The spelling of 1117564988 in words is "one billion, one hundred seventeen million, five hundred sixty-four thousand, nine hundred eighty-eight".