1094745640 has 32 divisors (see below), whose sum is σ = 2529753480. Its totient is φ = 426062592.

The previous prime is 1094745637. The next prime is 1094745661. The reversal of 1094745640 is 465474901.

It can be written as a sum of positive squares in 4 ways, for example, as 1072824516 + 21921124 = 32754^2 + 4682^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1094745593 and 1094745602.

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, 368367 + ... + 371326.

Almost surely, 2^1094745640 is an apocalyptic number.

1094745640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1094745640 is an abundant number, since it is smaller than the sum of its proper divisors (1435007840).

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

1094745640 is a wasteful number, since it uses less digits than its factorization.

1094745640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739741 (or 739737 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 1094745640 is about 33086.9406261746. The cubic root of 1094745640 is about 1030.6338637745.

The spelling of 1094745640 in words is "one billion, ninety-four million, seven hundred forty-five thousand, six hundred forty".