1089108921894 has 32 divisors (see below), whose sum is σ = 2493204122880. Its totient is φ = 310697440032.

The previous prime is 1089108921871. The next prime is 1089108921911. The reversal of 1089108921894 is 4981298019801.

It is a super-2 number, since 2×1089108921894² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19827984 + ... + 19882835.

It is an arithmetic number, because the mean of its divisors is an integer number (77912628840).

Almost surely, 2^{1089108921894} is an apocalyptic number.

1089108921894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1089108921894 is an abundant number, since it is smaller than the sum of its proper divisors (1404095200986).

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

1089108921894 is a wasteful number, since it uses less digits than its factorization.

1089108921894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39711484.

The product of its (nonzero) digits is 2985984, while the sum is 60.

The spelling of 1089108921894 in words is "one trillion, eighty-nine billion, one hundred eight million, nine hundred twenty-one thousand, eight hundred ninety-four".