1116294921 has 81 divisors (see below), whose sum is σ = 1973617191. Its totient is φ = 606209184.

The previous prime is 1116294911. The next prime is 1116294923. The reversal of 1116294921 is 1294926111.

1116294921 = 1³ + 2³ + ... + 258³.

It is a happy number.

The square root of 1116294921 is 33411.

It is a perfect power (a square), and thus also a powerful number.

1116294921 is a `hidden beast` number, since 1 + 1 + 1 + 629 + 4 + 9 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 998876025 + 117418896 = 31605^2 + 10836^2 .

It is not a de Polignac number, because 1116294921 - 2⁷ = 1116294793 is a prime.

It is a super-2 number, since 2×1116294921² = 2492228701300792482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1116294923) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 25960326 + ... + 25960368.

Almost surely, 2^1116294921 is an apocalyptic number.

1116294921 is the 33411-st square number.

1116294921 is the 16706-th centered octagonal number.

It is an amenable number.

1116294921 is a deficient number, since it is larger than the sum of its proper divisors (857322270).

1116294921 is an equidigital number, since it uses as much as digits as its factorization.

1116294921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 90 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The cubic root of 1116294921 is about 1037.3524004670.

Multiplying 1116294921 by its sum of digits (36), we get a square (40186617156 = 200466²).

The spelling of 1116294921 in words is "one billion, one hundred sixteen million, two hundred ninety-four thousand, nine hundred twenty-one".