1135697920 has 224 divisors, whose sum is σ = 3312249408. Its totient is φ = 364904448.

The previous prime is 1135697861. The next prime is 1135697921. The reversal of 1135697920 is 297965311.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135697921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4874124 + ... + 4874356.

Almost surely, 2^1135697920 is an apocalyptic number.

1135697920 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 1135697920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1656124704).

1135697920 is an abundant number, since it is smaller than the sum of its proper divisors (2176551488).

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

1135697920 is an equidigital number, since it uses as much as digits as its factorization.

1135697920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 1135697920 is about 33700.1175072135. The cubic root of 1135697920 is about 1043.3281938138.

The spelling of 1135697920 in words is "one billion, one hundred thirty-five million, six hundred ninety-seven thousand, nine hundred twenty".