1373274137 has 2 divisors, whose sum is σ = 1373274138. Its totient is φ = 1373274136.

The previous prime is 1373274121. The next prime is 1373274169. The reversal of 1373274137 is 7314723731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1335463936 + 37810201 = 36544^2 + 6149^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373274137 - 2⁴ = 1373274121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1373274137.

It is not a weakly prime, because it can be changed into another prime (1373274107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686637068 + 686637069.

It is an arithmetic number, because the mean of its divisors is an integer number (686637069).

Almost surely, 2^1373274137 is an apocalyptic number.

It is an amenable number.

1373274137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373274137 is an equidigital number, since it uses as much as digits as its factorization.

1373274137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74088, while the sum is 38.

The square root of 1373274137 is about 37057.7135964970. The cubic root of 1373274137 is about 1111.5246038330.

Adding to 1373274137 its reverse (7314723731), we get a palindrome (8687997868).

The spelling of 1373274137 in words is "one billion, three hundred seventy-three million, two hundred seventy-four thousand, one hundred thirty-seven".