1252644679 has 16 divisors (see below), whose sum is σ = 1472919840. Its totient is φ = 1050255360.

The previous prime is 1252644667. The next prime is 1252644721. The reversal of 1252644679 is 9764462521.

It is not a de Polignac number, because 1252644679 - 2¹³ = 1252636487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252644979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198379 + ... + 204595.

It is an arithmetic number, because the mean of its divisors is an integer number (92057490).

Almost surely, 2^1252644679 is an apocalyptic number.

1252644679 is a deficient number, since it is larger than the sum of its proper divisors (220275161).

1252644679 is a wasteful number, since it uses less digits than its factorization.

1252644679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7650.

The product of its digits is 725760, while the sum is 46.

The square root of 1252644679 is about 35392.7207063825. The cubic root of 1252644679 is about 1077.9765149554.

The spelling of 1252644679 in words is "one billion, two hundred fifty-two million, six hundred forty-four thousand, six hundred seventy-nine".