1090921893615 has 96 divisors (see below), whose sum is σ = 2048085539136. Its totient is φ = 535122432000.

The previous prime is 1090921893613. The next prime is 1090921893619. The reversal of 1090921893615 is 5163981290901.

1090921893615 is a `hidden beast` number, since 1 + 0 + 9 + 0 + 9 + 2 + 18 + 9 + 3 + 615 = 666.

It is not a de Polignac number, because 1090921893615 - 2¹ = 1090921893613 is a prime.

It is a super-2 number, since 2×1090921893615² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090921893613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10123197 + ... + 10230393.

It is an arithmetic number, because the mean of its divisors is an integer number (21334224366).

Almost surely, 2^{1090921893615} is an apocalyptic number.

1090921893615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1090921893615 is a deficient number, since it is larger than the sum of its proper divisors (957163645521).

1090921893615 is a wasteful number, since it uses less digits than its factorization.

1090921893615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107529 (or 107526 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 54.

The spelling of 1090921893615 in words is "one trillion, ninety billion, nine hundred twenty-one million, eight hundred ninety-three thousand, six hundred fifteen".