1093665642 has 16 divisors (see below), whose sum is σ = 2211909120. Its totient is φ = 360458912.

The previous prime is 1093665623. The next prime is 1093665649. The reversal of 1093665642 is 2465663901.

It is a super-2 number, since 2×1093665642² = 2392209072982544328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1093665594 and 1093665603.

It is not an unprimeable number, because it can be changed into a prime (1093665649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1023498 + ... + 1024565.

It is an arithmetic number, because the mean of its divisors is an integer number (138244320).

Almost surely, 2^1093665642 is an apocalyptic number.

1093665642 is an abundant number, since it is smaller than the sum of its proper divisors (1118243478).

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

1093665642 is a wasteful number, since it uses less digits than its factorization.

1093665642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048157.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 1093665642 is about 33070.6159906343. The cubic root of 1093665642 is about 1030.2948356322.

The spelling of 1093665642 in words is "one billion, ninety-three million, six hundred sixty-five thousand, six hundred forty-two".