1136721623 has 2 divisors, whose sum is σ = 1136721624. Its totient is φ = 1136721622.

The previous prime is 1136721587. The next prime is 1136721629. The reversal of 1136721623 is 3261276311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1136721623 - 2¹⁸ = 1136459479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1136721623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1136721629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568360811 + 568360812.

It is an arithmetic number, because the mean of its divisors is an integer number (568360812).

Almost surely, 2^1136721623 is an apocalyptic number.

1136721623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1136721623 is an equidigital number, since it uses as much as digits as its factorization.

1136721623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 1136721623 is about 33715.3025049457. The cubic root of 1136721623 is about 1043.6415803909.

Adding to 1136721623 its reverse (3261276311), we get a palindrome (4397997934).

The spelling of 1136721623 in words is "one billion, one hundred thirty-six million, seven hundred twenty-one thousand, six hundred twenty-three".