1223787057 has 8 divisors (see below), whose sum is σ = 1635401184. Its totient is φ = 814015488.

The previous prime is 1223787023. The next prime is 1223787067. The reversal of 1223787057 is 7507873221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1223787057 - 2¹⁵ = 1223754289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223787067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459088 + ... + 461745.

It is an arithmetic number, because the mean of its divisors is an integer number (204425148).

Almost surely, 2^1223787057 is an apocalyptic number.

It is an amenable number.

1223787057 is a deficient number, since it is larger than the sum of its proper divisors (411614127).

1223787057 is an equidigital number, since it uses as much as digits as its factorization.

1223787057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921279.

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 1223787057 is about 34982.6679514299. The cubic root of 1223787057 is about 1069.6342118811.

The spelling of 1223787057 in words is "one billion, two hundred twenty-three million, seven hundred eighty-seven thousand, fifty-seven".