1091445396 has 24 divisors (see below), whose sum is σ = 2628858624. Its totient is φ = 352079040.

The previous prime is 1091445391. The next prime is 1091445401. The reversal of 1091445396 is 6935441901.

It is an interprime number because it is at equal distance from previous prime (1091445391) and next prime (1091445401).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091445391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1466625 + ... + 1467368.

It is an arithmetic number, because the mean of its divisors is an integer number (109535776).

Almost surely, 2^1091445396 is an apocalyptic number.

It is an amenable number.

1091445396 is an abundant number, since it is smaller than the sum of its proper divisors (1537413228).

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

1091445396 is a wasteful number, since it uses less digits than its factorization.

1091445396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934031 (or 2934029 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 1091445396 is about 33037.0306777107. The cubic root of 1091445396 is about 1029.5971642412.

The spelling of 1091445396 in words is "one billion, ninety-one million, four hundred forty-five thousand, three hundred ninety-six".