1091332026 has 12 divisors (see below), whose sum is σ = 2364552762. Its totient is φ = 363777336.

The previous prime is 1091332007. The next prime is 1091332043. The reversal of 1091332026 is 6202331901.

It can be written as a sum of positive squares in only one way, i.e., 607376025 + 483956001 = 24645^2 + 21999^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30314761 + ... + 30314796.

Almost surely, 2^1091332026 is an apocalyptic number.

1091332026 is an abundant number, since it is smaller than the sum of its proper divisors (1273220736).

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

1091332026 is a wasteful number, since it uses less digits than its factorization.

1091332026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60629565 (or 60629562 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 1091332026 is about 33035.3148312529. The cubic root of 1091332026 is about 1029.5615144284.

Adding to 1091332026 its reverse (6202331901), we get a palindrome (7293663927).

The spelling of 1091332026 in words is "one billion, ninety-one million, three hundred thirty-two thousand, twenty-six".