1642080393 has 6 divisors (see below), whose sum is σ = 2371893914. Its totient is φ = 1094720256.

The previous prime is 1642080379. The next prime is 1642080413. The reversal of 1642080393 is 3930802461.

1642080393 is a `hidden beast` number, since 1 + 64 + 208 + 0 + 393 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1277919504 + 364160889 = 35748^2 + 19083^2 .

It is not a de Polignac number, because 1642080393 - 2⁶ = 1642080329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1642080353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91226680 + ... + 91226697.

Almost surely, 2^1642080393 is an apocalyptic number.

It is an amenable number.

1642080393 is a deficient number, since it is larger than the sum of its proper divisors (729813521).

1642080393 is a wasteful number, since it uses less digits than its factorization.

1642080393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182453383 (or 182453380 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 1642080393 is about 40522.5911437065. The cubic root of 1642080393 is about 1179.7721462282.

The spelling of 1642080393 in words is "one billion, six hundred forty-two million, eighty thousand, three hundred ninety-three".