1091459456 has 16 divisors (see below), whose sum is σ = 2174392140. Its totient is φ = 545729664.

The previous prime is 1091459441. The next prime is 1091459471. The reversal of 1091459456 is 6549541901.

It is an interprime number because it is at equal distance from previous prime (1091459441) and next prime (1091459471).

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4263386 + ... + 4263641.

Almost surely, 2^1091459456 is an apocalyptic number.

1091459456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1091459456 is a deficient number, since it is larger than the sum of its proper divisors (1082932684).

1091459456 is an frugal number, since it uses more digits than its factorization.

1091459456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8527041 (or 8527029 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 1091459456 is about 33037.2434685462. The cubic root of 1091459456 is about 1029.6015853126.

The spelling of 1091459456 in words is "one billion, ninety-one million, four hundred fifty-nine thousand, four hundred fifty-six".