1228195763 has 4 divisors (see below), whose sum is σ = 1234016808. Its totient is φ = 1222374720.

The previous prime is 1228195751. The next prime is 1228195781. The reversal of 1228195763 is 3675918221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3675918221 = 547 ⋅6720143.

It is a cyclic number.

It is not a de Polignac number, because 1228195763 - 2¹² = 1228191667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228195783) 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, 2910206 + ... + 2910627.

It is an arithmetic number, because the mean of its divisors is an integer number (308504202).

Almost surely, 2^1228195763 is an apocalyptic number.

1228195763 is a deficient number, since it is larger than the sum of its proper divisors (5821045).

1228195763 is an equidigital number, since it uses as much as digits as its factorization.

1228195763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5821044.

The product of its digits is 181440, while the sum is 44.

The square root of 1228195763 is about 35045.6240206962. The cubic root of 1228195763 is about 1070.9171287788.

The spelling of 1228195763 in words is "one billion, two hundred twenty-eight million, one hundred ninety-five thousand, seven hundred sixty-three".