1091204226 has 72 divisors (see below), whose sum is σ = 2869910784. Its totient is φ = 298211760.

The previous prime is 1091204221. The next prime is 1091204263. The reversal of 1091204226 is 6224021901.

It is a self number, because there is not a number n which added to its sum of digits gives 1091204226.

It is not an unprimeable number, because it can be changed into a prime (1091204221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6610 + ... + 47181.

It is an arithmetic number, because the mean of its divisors is an integer number (39859872).

Almost surely, 2^1091204226 is an apocalyptic number.

1091204226 is an abundant number, since it is smaller than the sum of its proper divisors (1778706558).

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

1091204226 is a wasteful number, since it uses less digits than its factorization.

1091204226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53836 (or 53826 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1091204226 is about 33033.3804809620. The cubic root of 1091204226 is about 1029.5213240632.

The spelling of 1091204226 in words is "one billion, ninety-one million, two hundred four thousand, two hundred twenty-six".