1136621867 has 4 divisors (see below), whose sum is σ = 1136700240. Its totient is φ = 1136543496.

The previous prime is 1136621861. The next prime is 1136621869. The reversal of 1136621867 is 7681266311.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1136621867 - 2²⁰ = 1135573291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1136621861) 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, 10367 + ... + 48792.

It is an arithmetic number, because the mean of its divisors is an integer number (284175060).

Almost surely, 2^1136621867 is an apocalyptic number.

1136621867 is a deficient number, since it is larger than the sum of its proper divisors (78373).

1136621867 is an equidigital number, since it uses as much as digits as its factorization.

1136621867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78372.

The product of its digits is 72576, while the sum is 41.

The square root of 1136621867 is about 33713.8230849009. The cubic root of 1136621867 is about 1043.6110503259.

It can be divided in two parts, 11366 and 21867, that added together give a palindrome (33233).

The spelling of 1136621867 in words is "one billion, one hundred thirty-six million, six hundred twenty-one thousand, eight hundred sixty-seven".