1133961720 has 32 divisors (see below), whose sum is σ = 3401885520. Its totient is φ = 302389760.

The previous prime is 1133961707. The next prime is 1133961721. The reversal of 1133961720 is 271693311.

1133961720 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133961721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4724721 + ... + 4724960.

Almost surely, 2^1133961720 is an apocalyptic number.

1133961720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1133961720 is an abundant number, since it is smaller than the sum of its proper divisors (2267923800).

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

1133961720 is a wasteful number, since it uses less digits than its factorization.

1133961720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9449695 (or 9449691 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1133961720 is about 33674.3481005943. The cubic root of 1133961720 is about 1042.7962594450.

The spelling of 1133961720 in words is "one billion, one hundred thirty-three million, nine hundred sixty-one thousand, seven hundred twenty".