1197290137 has 2 divisors, whose sum is σ = 1197290138. Its totient is φ = 1197290136.

The previous prime is 1197290113. The next prime is 1197290177. The reversal of 1197290137 is 7310927911.

It is an a-pointer prime, because the next prime (1197290177) can be obtained adding 1197290137 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 685444761 + 511845376 = 26181^2 + 22624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1197290137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1197290137.

It is not a weakly prime, because it can be changed into another prime (1197290177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598645068 + 598645069.

It is an arithmetic number, because the mean of its divisors is an integer number (598645069).

Almost surely, 2^1197290137 is an apocalyptic number.

It is an amenable number.

1197290137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197290137 is an equidigital number, since it uses as much as digits as its factorization.

1197290137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 40.

The square root of 1197290137 is about 34601.8805413810. The cubic root of 1197290137 is about 1061.8580609894.

The spelling of 1197290137 in words is "one billion, one hundred ninety-seven million, two hundred ninety thousand, one hundred thirty-seven".