1222783953 has 4 divisors (see below), whose sum is σ = 1630378608. Its totient is φ = 815189300.

The previous prime is 1222783951. The next prime is 1222783987. The reversal of 1222783953 is 3593872221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1222783953 - 2¹ = 1222783951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222783951) 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, 203797323 + ... + 203797328.

It is an arithmetic number, because the mean of its divisors is an integer number (407594652).

Almost surely, 2^1222783953 is an apocalyptic number.

It is an amenable number.

1222783953 is a deficient number, since it is larger than the sum of its proper divisors (407594655).

1222783953 is an equidigital number, since it uses as much as digits as its factorization.

1222783953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407594654.

The product of its digits is 181440, while the sum is 42.

The square root of 1222783953 is about 34968.3278553608. The cubic root of 1222783953 is about 1069.3418822526.

The spelling of 1222783953 in words is "one billion, two hundred twenty-two million, seven hundred eighty-three thousand, nine hundred fifty-three".