1226078957 has 4 divisors (see below), whose sum is σ = 1227766176. Its totient is φ = 1224391740.

The previous prime is 1226078951. The next prime is 1226078993. The reversal of 1226078957 is 7598706221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1226078957 - 2¹⁴ = 1226062573 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 (1226078951) 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, 842519 + ... + 843972.

It is an arithmetic number, because the mean of its divisors is an integer number (306941544).

Almost surely, 2^1226078957 is an apocalyptic number.

It is an amenable number.

1226078957 is a deficient number, since it is larger than the sum of its proper divisors (1687219).

1226078957 is an equidigital number, since it uses as much as digits as its factorization.

1226078957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687218.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 1226078957 is about 35015.4102789043. The cubic root of 1226078957 is about 1070.3015300079.

The spelling of 1226078957 in words is "one billion, two hundred twenty-six million, seventy-eight thousand, nine hundred fifty-seven".