1090640481 has 24 divisors (see below), whose sum is σ = 1746180864. Its totient is φ = 603116640.

The previous prime is 1090640479. The next prime is 1090640503. The reversal of 1090640481 is 1840460901.

It is not a de Polignac number, because 1090640481 - 2¹ = 1090640479 is a prime.

It is a super-2 number, since 2×1090640481² = 2378993317591822722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1090640471) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 115110 + ... + 124223.

It is an arithmetic number, because the mean of its divisors is an integer number (72757536).

Almost surely, 2^1090640481 is an apocalyptic number.

It is an amenable number.

1090640481 is a deficient number, since it is larger than the sum of its proper divisors (655540383).

1090640481 is a wasteful number, since it uses less digits than its factorization.

1090640481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239381 (or 239374 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1090640481 is about 33024.8464190221. The cubic root of 1090640481 is about 1029.3440008633.

The spelling of 1090640481 in words is "one billion, ninety million, six hundred forty thousand, four hundred eighty-one".