1226105787 has 16 divisors (see below), whose sum is σ = 1654525440. Its totient is φ = 807604512.

The previous prime is 1226105759. The next prime is 1226105789. The reversal of 1226105787 is 7875016221.

1226105787 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1226105787 - 2¹² = 1226101691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1226105789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77038 + ... + 91580.

It is an arithmetic number, because the mean of its divisors is an integer number (103407840).

Almost surely, 2^1226105787 is an apocalyptic number.

1226105787 is a deficient number, since it is larger than the sum of its proper divisors (428419653).

1226105787 is a wasteful number, since it uses less digits than its factorization.

1226105787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14882.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 1226105787 is about 35015.7933938387. The cubic root of 1226105787 is about 1070.3093370040.

The spelling of 1226105787 in words is "one billion, two hundred twenty-six million, one hundred five thousand, seven hundred eighty-seven".