1226383855 has 4 divisors (see below), whose sum is σ = 1471660632. Its totient is φ = 981107080.

The previous prime is 1226383819. The next prime is 1226383877. The reversal of 1226383855 is 5583836221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5583836221 = 37783 ⋅147787.

It is not a de Polignac number, because 1226383855 - 2⁷ = 1226383727 is a prime.

It is a super-2 number, since 2×1226383855² = 3008034719609322050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122638381 + ... + 122638390.

It is an arithmetic number, because the mean of its divisors is an integer number (367915158).

Almost surely, 2^1226383855 is an apocalyptic number.

1226383855 is a deficient number, since it is larger than the sum of its proper divisors (245276777).

1226383855 is an equidigital number, since it uses as much as digits as its factorization.

1226383855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245276776.

The product of its digits is 345600, while the sum is 43.

The square root of 1226383855 is about 35019.7637770445. The cubic root of 1226383855 is about 1070.3902425516.

The spelling of 1226383855 in words is "one billion, two hundred twenty-six million, three hundred eighty-three thousand, eight hundred fifty-five".