1361535137 has 2 divisors, whose sum is σ = 1361535138. Its totient is φ = 1361535136.

The previous prime is 1361535107. The next prime is 1361535157. The reversal of 1361535137 is 7315351631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 792760336 + 568774801 = 28156^2 + 23849^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361535137 - 2²² = 1357340833 is a prime.

It is a super-4 number, since 4×1361535137⁴ (a number of 38 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1361535097 and 1361535106.

It is not a weakly prime, because it can be changed into another prime (1361535107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680767568 + 680767569.

It is an arithmetic number, because the mean of its divisors is an integer number (680767569).

Almost surely, 2^1361535137 is an apocalyptic number.

It is an amenable number.

1361535137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361535137 is an equidigital number, since it uses as much as digits as its factorization.

1361535137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28350, while the sum is 35.

The square root of 1361535137 is about 36898.9855822623. The cubic root of 1361535137 is about 1108.3483639296.

Adding to 1361535137 its reverse (7315351631), we get a palindrome (8676886768).

The spelling of 1361535137 in words is "one billion, three hundred sixty-one million, five hundred thirty-five thousand, one hundred thirty-seven".