9137478397 has 2 divisors, whose sum is σ = 9137478398. Its totient is φ = 9137478396.

The previous prime is 9137478379. The next prime is 9137478403. The reversal of 9137478397 is 7938747319.

9137478397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (9137478379) 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., 7887926596 + 1249551801 = 88814^2 + 35349^2 .

It is a cyclic number.

It is not a de Polignac number, because 9137478397 - 2²³ = 9129089789 is a prime.

It is a super-2 number, since 2×9137478397² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9137478307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4568739198 + 4568739199.

It is an arithmetic number, because the mean of its divisors is an integer number (4568739199).

Almost surely, 2^9137478397 is an apocalyptic number.

It is an amenable number.

9137478397 is a deficient number, since it is larger than the sum of its proper divisors (1).

9137478397 is an equidigital number, since it uses as much as digits as its factorization.

9137478397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8001504, while the sum is 58.

The square root of 9137478397 is about 95590.1584735584. The cubic root of 9137478397 is about 2090.6217022900.

The spelling of 9137478397 in words is "nine billion, one hundred thirty-seven million, four hundred seventy-eight thousand, three hundred ninety-seven".