1642793125 has 20 divisors (see below), whose sum is σ = 2102936220. Its totient is φ = 1282160000.

The previous prime is 1642793107. The next prime is 1642793177. The reversal of 1642793125 is 5213972461.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 1160287969 + 482505156 = 34063^2 + 21966^2 .

It is not a de Polignac number, because 1642793125 - 2²³ = 1634404517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6430 + ... + 57679.

It is an arithmetic number, because the mean of its divisors is an integer number (105146811).

Almost surely, 2^1642793125 is an apocalyptic number.

It is an amenable number.

1642793125 is a deficient number, since it is larger than the sum of its proper divisors (460143095).

1642793125 is an frugal number, since it uses more digits than its factorization.

1642793125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64170 (or 64155 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 1642793125 is about 40531.3844446498. The cubic root of 1642793125 is about 1179.9428117932.

The spelling of 1642793125 in words is "one billion, six hundred forty-two million, seven hundred ninety-three thousand, one hundred twenty-five".