1226260957 has 4 divisors (see below), whose sum is σ = 1240039260. Its totient is φ = 1212482656.

The previous prime is 1226260891. The next prime is 1226260967. The reversal of 1226260957 is 7590626221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7590626221 = 23 ⋅330027227.

It can be written as a sum of positive squares in 2 ways, for example, as 646125561 + 580135396 = 25419^2 + 24086^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226260957 - 2⁷ = 1226260829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226260967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6889018 + ... + 6889195.

It is an arithmetic number, because the mean of its divisors is an integer number (310009815).

Almost surely, 2^1226260957 is an apocalyptic number.

It is an amenable number.

1226260957 is a deficient number, since it is larger than the sum of its proper divisors (13778303).

1226260957 is an equidigital number, since it uses as much as digits as its factorization.

1226260957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13778302.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1226260957 is about 35018.0090382078. The cubic root of 1226260957 is about 1070.3544861518.

The spelling of 1226260957 in words is "one billion, two hundred twenty-six million, two hundred sixty thousand, nine hundred fifty-seven".