1117771620 has 96 divisors (see below), whose sum is σ = 3625966848. Its totient is φ = 251983872.

The previous prime is 1117771601. The next prime is 1117771637. The reversal of 1117771620 is 261777111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12432 + ... + 48888.

It is an arithmetic number, because the mean of its divisors is an integer number (37770488).

Almost surely, 2^1117771620 is an apocalyptic number.

1117771620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1117771620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1812983424).

1117771620 is an abundant number, since it is smaller than the sum of its proper divisors (2508195228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1117771620 is a wasteful number, since it uses less digits than its factorization.

1117771620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36549 (or 36547 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 33.

The square root of 1117771620 is about 33433.0916907186. The cubic root of 1117771620 is about 1037.8096220140.

The spelling of 1117771620 in words is "one billion, one hundred seventeen million, seven hundred seventy-one thousand, six hundred twenty".