1115226019 has 2 divisors, whose sum is σ = 1115226020. Its totient is φ = 1115226018.

The previous prime is 1115225999. The next prime is 1115226067. The reversal of 1115226019 is 9106225111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1115226019 - 2²¹ = 1113128867 is a prime.

It is a super-2 number, since 2×1115226019² = 2487458146909176722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1115226089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557613009 + 557613010.

It is an arithmetic number, because the mean of its divisors is an integer number (557613010).

Almost surely, 2^1115226019 is an apocalyptic number.

1115226019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115226019 is an equidigital number, since it uses as much as digits as its factorization.

1115226019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 1115226019 is about 33394.9999101662. Note that the first 4 decimals coincide. The cubic root of 1115226019 is about 1037.0211910525.

The spelling of 1115226019 in words is "one billion, one hundred fifteen million, two hundred twenty-six thousand, nineteen".