1097781300 has 648 divisors, whose sum is σ = 4569207552. Its totient is φ = 217728000.

The previous prime is 1097781299. The next prime is 1097781337. The reversal of 1097781300 is 31877901.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 15038064 + ... + 15038136.

Almost surely, 2^1097781300 is an apocalyptic number.

1097781300 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 1097781300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2284603776).

1097781300 is an abundant number, since it is smaller than the sum of its proper divisors (3471426252).

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

1097781300 is a wasteful number, since it uses less digits than its factorization.

1097781300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 1097781300 is about 33132.7828592770. The cubic root of 1097781300 is about 1031.5856119781.

The spelling of 1097781300 in words is "one billion, ninety-seven million, seven hundred eighty-one thousand, three hundred".