5642148309 has 32 divisors (see below), whose sum is σ = 9109241856. Its totient is φ = 3032451840.

The previous prime is 5642148289. The next prime is 5642148383. The reversal of 5642148309 is 9038412465.

It is not a de Polignac number, because 5642148309 - 2⁷ = 5642148181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5642148509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 663724 + ... + 672170.

It is an arithmetic number, because the mean of its divisors is an integer number (284663808).

Almost surely, 2^5642148309 is an apocalyptic number.

It is an amenable number.

5642148309 is a deficient number, since it is larger than the sum of its proper divisors (3467093547).

5642148309 is a wasteful number, since it uses less digits than its factorization.

5642148309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10345.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 5642148309 is about 75114.2350623369. The cubic root of 5642148309 is about 1780.2520693606.

The spelling of 5642148309 in words is "five billion, six hundred forty-two million, one hundred forty-eight thousand, three hundred nine".