1253957066 has 4 divisors (see below), whose sum is σ = 1880935602. Its totient is φ = 626978532.

The previous prime is 1253957063. The next prime is 1253957083. The reversal of 1253957066 is 6607593521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6607593521 = 283 ⋅23348387.

It can be written as a sum of positive squares in only one way, i.e., 1176147025 + 77810041 = 34295^2 + 8821^2 .

It is not an unprimeable number, because it can be changed into a prime (1253957063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313489265 + ... + 313489268.

Almost surely, 2^1253957066 is an apocalyptic number.

1253957066 is a deficient number, since it is larger than the sum of its proper divisors (626978536).

1253957066 is an equidigital number, since it uses as much as digits as its factorization.

1253957066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626978535.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 1253957066 is about 35411.2562047720. The cubic root of 1253957066 is about 1078.3528463580.

The spelling of 1253957066 in words is "one billion, two hundred fifty-three million, nine hundred fifty-seven thousand, sixty-six".