1091052956 has 12 divisors (see below), whose sum is σ = 2182105968. Its totient is φ = 467594112.

The previous prime is 1091052923. The next prime is 1091052959. The reversal of 1091052956 is 6592501901.

1091052956 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091052959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19483061 + ... + 19483116.

It is an arithmetic number, because the mean of its divisors is an integer number (181842164).

Almost surely, 2^1091052956 is an apocalyptic number.

It is an amenable number.

1091052956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1091052956 is a wasteful number, since it uses less digits than its factorization.

1091052956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38966188 (or 38966186 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 1091052956 is about 33031.0907479605. The cubic root of 1091052956 is about 1029.4737488297.

The spelling of 1091052956 in words is "one billion, ninety-one million, fifty-two thousand, nine hundred fifty-six".