1133581401 has 24 divisors (see below), whose sum is σ = 1725152000. Its totient is φ = 715290912.

The previous prime is 1133581387. The next prime is 1133581417. The reversal of 1133581401 is 1041853311.

1133581401 is a `hidden beast` number, since 11 + 33 + 581 + 40 + 1 = 666.

It is not a de Polignac number, because 1133581401 - 2¹¹ = 1133579353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1133581441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242040 + ... + 246678.

Almost surely, 2^1133581401 is an apocalyptic number.

It is an amenable number.

1133581401 is a deficient number, since it is larger than the sum of its proper divisors (591570599).

1133581401 is a wasteful number, since it uses less digits than its factorization.

1133581401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6093 (or 6090 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1133581401 is about 33668.7006134778. The cubic root of 1133581401 is about 1042.6796653925.

The spelling of 1133581401 in words is "one billion, one hundred thirty-three million, five hundred eighty-one thousand, four hundred one".