1091464240 has 40 divisors (see below), whose sum is σ = 2554488288. Its totient is φ = 433689600.

The previous prime is 1091464223. The next prime is 1091464267. The reversal of 1091464240 is 424641901.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33097 + ... + 57256.

Almost surely, 2^1091464240 is an apocalyptic number.

1091464240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1091464240 is an abundant number, since it is smaller than the sum of its proper divisors (1463024048).

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

1091464240 is a wasteful number, since it uses less digits than its factorization.

1091464240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90517 (or 90511 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1091464240 is about 33037.3158716019. The cubic root of 1091464240 is about 1029.6030896002.

The spelling of 1091464240 in words is "one billion, ninety-one million, four hundred sixty-four thousand, two hundred forty".