1090990809019 has 4 divisors (see below), whose sum is σ = 1100999899120. Its totient is φ = 1080981718920.

The previous prime is 1090990809017. The next prime is 1090990809047. The reversal of 1090990809019 is 9109080990901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1090990809019 - 2¹ = 1090990809017 is a prime.

It is a super-2 number, since 2×1090990809019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1090990809017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5004544887 + ... + 5004545104.

It is an arithmetic number, because the mean of its divisors is an integer number (275249974780).

Almost surely, 2^{1090990809019} is an apocalyptic number.

1090990809019 is a deficient number, since it is larger than the sum of its proper divisors (10009090101).

1090990809019 is a wasteful number, since it uses less digits than its factorization.

1090990809019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10009090100.

The product of its (nonzero) digits is 472392, while the sum is 55.

The spelling of 1090990809019 in words is "one trillion, ninety billion, nine hundred ninety million, eight hundred nine thousand, nineteen".