1226986257 has 8 divisors (see below), whose sum is σ = 1869693376. Its totient is φ = 701134992.

The previous prime is 1226986177. The next prime is 1226986283. The reversal of 1226986257 is 7526896221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1226986257 - 2⁸ = 1226986001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226986157) 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 7 ways as a sum of consecutive naturals, for example, 29213938 + ... + 29213979.

It is an arithmetic number, because the mean of its divisors is an integer number (233711672).

Almost surely, 2^1226986257 is an apocalyptic number.

It is an amenable number.

1226986257 is a deficient number, since it is larger than the sum of its proper divisors (642707119).

1226986257 is an equidigital number, since it uses as much as digits as its factorization.

1226986257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58427927.

The product of its digits is 725760, while the sum is 48.

The square root of 1226986257 is about 35028.3636072255. The cubic root of 1226986257 is about 1070.5654730807.

The spelling of 1226986257 in words is "one billion, two hundred twenty-six million, nine hundred eighty-six thousand, two hundred fifty-seven".