1226540097 has 16 divisors (see below), whose sum is σ = 1817640000. Its totient is φ = 817448832.

The previous prime is 1226540083. The next prime is 1226540111. The reversal of 1226540097 is 7900456221.

1226540097 is a `hidden beast` number, since 1 + 2 + 26 + 540 + 0 + 97 = 666.

It is an interprime number because it is at equal distance from previous prime (1226540083) and next prime (1226540111).

It is not a de Polignac number, because 1226540097 - 2⁶ = 1226540033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1226540027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156529 + ... + 164177.

It is an arithmetic number, because the mean of its divisors is an integer number (113602500).

Almost surely, 2^1226540097 is an apocalyptic number.

It is an amenable number.

1226540097 is a deficient number, since it is larger than the sum of its proper divisors (591099903).

1226540097 is an equidigital number, since it uses as much as digits as its factorization.

1226540097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13597 (or 13591 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1226540097 is about 35021.9944749011. The cubic root of 1226540097 is about 1070.4356967298.

The spelling of 1226540097 in words is "one billion, two hundred twenty-six million, five hundred forty thousand, ninety-seven".