1642795826 has 16 divisors (see below), whose sum is σ = 2833502784. Its totient is φ = 699735024.

The previous prime is 1642795811. The next prime is 1642795853. The reversal of 1642795826 is 6285972461.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357665 + ... + 362228.

It is an arithmetic number, because the mean of its divisors is an integer number (177093924).

Almost surely, 2^1642795826 is an apocalyptic number.

1642795826 is a deficient number, since it is larger than the sum of its proper divisors (1190706958).

1642795826 is a wasteful number, since it uses less digits than its factorization.

1642795826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720065.

The product of its digits is 1451520, while the sum is 50.

The square root of 1642795826 is about 40531.4177644947. The cubic root of 1642795826 is about 1179.9434584609.

The spelling of 1642795826 in words is "one billion, six hundred forty-two million, seven hundred ninety-five thousand, eight hundred twenty-six".