1135401887 has 4 divisors (see below), whose sum is σ = 1135684320. Its totient is φ = 1135119456.

The previous prime is 1135401871. The next prime is 1135401913. The reversal of 1135401887 is 7881045311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7881045311 = 593 ⋅13290127.

It is a cyclic number.

It is not a de Polignac number, because 1135401887 - 2⁴ = 1135401871 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1135401887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135404887) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 135098 + ... + 143255.

It is an arithmetic number, because the mean of its divisors is an integer number (283921080).

Almost surely, 2^1135401887 is an apocalyptic number.

1135401887 is a deficient number, since it is larger than the sum of its proper divisors (282433).

1135401887 is an equidigital number, since it uses as much as digits as its factorization.

1135401887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282432.

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 1135401887 is about 33695.7250552648. The cubic root of 1135401887 is about 1043.2375340208.

The spelling of 1135401887 in words is "one billion, one hundred thirty-five million, four hundred one thousand, eight hundred eighty-seven".