1136621951 has 2 divisors, whose sum is σ = 1136621952. Its totient is φ = 1136621950.

The previous prime is 1136621947. The next prime is 1136621953. The reversal of 1136621951 is 1591266311.

It is a strong prime.

It is an emirp because it is prime and its reverse (1591266311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1136621951 - 2² = 1136621947 is a prime.

Together with 1136621953, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1136621953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568310975 + 568310976.

It is an arithmetic number, because the mean of its divisors is an integer number (568310976).

Almost surely, 2^1136621951 is an apocalyptic number.

1136621951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1136621951 is an equidigital number, since it uses as much as digits as its factorization.

1136621951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 1136621951 is about 33713.8243306807. The cubic root of 1136621951 is about 1043.6110760347.

The spelling of 1136621951 in words is "one billion, one hundred thirty-six million, six hundred twenty-one thousand, nine hundred fifty-one".