1227953137 has 2 divisors, whose sum is σ = 1227953138. Its totient is φ = 1227953136.

The previous prime is 1227953099. The next prime is 1227953173. The reversal of 1227953137 is 7313597221.

Together with next prime (1227953173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1148938816 + 79014321 = 33896^2 + 8889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1227953137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1227953137.

It is not a weakly prime, because it can be changed into another prime (1227956137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613976568 + 613976569.

It is an arithmetic number, because the mean of its divisors is an integer number (613976569).

Almost surely, 2^1227953137 is an apocalyptic number.

It is an amenable number.

1227953137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1227953137 is an equidigital number, since it uses as much as digits as its factorization.

1227953137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 40.

The square root of 1227953137 is about 35042.1622763208. The cubic root of 1227953137 is about 1070.8466054256.

The spelling of 1227953137 in words is "one billion, two hundred twenty-seven million, nine hundred fifty-three thousand, one hundred thirty-seven".