1116921672 has 48 divisors (see below), whose sum is σ = 3098784780. Its totient is φ = 363225600.

The previous prime is 1116921667. The next prime is 1116921679. The reversal of 1116921672 is 2761296111.

It can be written as a sum of positive squares in 2 ways, for example, as 1093360356 + 23561316 = 33066^2 + 4854^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1116921679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186229 + ... + 192132.

Almost surely, 2^1116921672 is an apocalyptic number.

1116921672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1116921672 is an abundant number, since it is smaller than the sum of its proper divisors (1981863108).

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

1116921672 is a wasteful number, since it uses less digits than its factorization.

1116921672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378414 (or 378407 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 1116921672 is about 33420.3780948092. The cubic root of 1116921672 is about 1037.5465068812.

The spelling of 1116921672 in words is "one billion, one hundred sixteen million, nine hundred twenty-one thousand, six hundred seventy-two".