1089794939904 has 704 divisors, whose sum is σ = 3741195456000. Its totient is φ = 309905326080.

The previous prime is 1089794939899. The next prime is 1089794939921. The reversal of 1089794939904 is 4099394979801.

1089794939904 is a `hidden beast` number, since 108 + 97 + 9 + 49 + 399 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (704).

It is a super-2 number, since 2×1089794939904² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 652961982 + ... + 652963650.

Almost surely, 2^{1089794939904} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089794939904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1870597728000).

1089794939904 is an abundant number, since it is smaller than the sum of its proper divisors (2651400516096).

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

1089794939904 is a wasteful number, since it uses less digits than its factorization.

1089794939904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841 (or 1817 counting only the distinct ones).

The product of its (nonzero) digits is 158723712, while the sum is 72.

The spelling of 1089794939904 in words is "one trillion, eighty-nine billion, seven hundred ninety-four million, nine hundred thirty-nine thousand, nine hundred four".