1642795858 has 16 divisors (see below), whose sum is σ = 2699757216. Its totient is φ = 743518240.

The previous prime is 1642795853. The next prime is 1642795877. The reversal of 1642795858 is 8585972461.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1642795799 and 1642795808.

It is not an unprimeable number, because it can be changed into a prime (1642795853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155116 + ... + 165367.

It is an arithmetic number, because the mean of its divisors is an integer number (168734826).

Almost surely, 2^1642795858 is an apocalyptic number.

1642795858 is a deficient number, since it is larger than the sum of its proper divisors (1056961358).

1642795858 is a wasteful number, since it uses less digits than its factorization.

1642795858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320729.

The product of its digits is 4838400, while the sum is 55.

The square root of 1642795858 is about 40531.4181592502. The cubic root of 1642795858 is about 1179.9434661223.

The spelling of 1642795858 in words is "one billion, six hundred forty-two million, seven hundred ninety-five thousand, eight hundred fifty-eight".