1228011803 has 2 divisors, whose sum is σ = 1228011804. Its totient is φ = 1228011802.

The previous prime is 1228011769. The next prime is 1228011859. The reversal of 1228011803 is 3081108221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1228011803 - 2¹⁶ = 1227946267 is a prime.

It is not a weakly prime, because it can be changed into another prime (1228011893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614005901 + 614005902.

It is an arithmetic number, because the mean of its divisors is an integer number (614005902).

Almost surely, 2^1228011803 is an apocalyptic number.

1228011803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228011803 is an equidigital number, since it uses as much as digits as its factorization.

1228011803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1228011803 is about 35042.9993436635. Note that the first 3 decimals coincide. The cubic root of 1228011803 is about 1070.8636585429.

The spelling of 1228011803 in words is "one billion, two hundred twenty-eight million, eleven thousand, eight hundred three".