1091392849800 has 2304 divisors, whose sum is σ = 4698711763200. Its totient is φ = 232243200000.

The previous prime is 1091392849787. The next prime is 1091392849831. The reversal of 1091392849800 is 89482931901.

1091392849800 is a `hidden beast` number, since 1 + 0 + 91 + 392 + 84 + 98 + 0 + 0 = 666.

It is a super-2 number, since 2×1091392849800² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 575 ways as a sum of consecutive naturals, for example, 10805869750 + ... + 10805869850.

It is an arithmetic number, because the mean of its divisors is an integer number (2039371425).

Almost surely, 2^{1091392849800} is an apocalyptic number.

1091392849800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1091392849800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2349355881600).

1091392849800 is an abundant number, since it is smaller than the sum of its proper divisors (3607318913400).

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

1091392849800 is a wasteful number, since it uses less digits than its factorization.

1091392849800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 1091392849800 in words is "one trillion, ninety-one billion, three hundred ninety-two million, eight hundred forty-nine thousand, eight hundred".