1996859858 has 12 divisors (see below), whose sum is σ = 3484316862. Its totient is φ = 855797040.

The previous prime is 1996859791. The next prime is 1996859863. The reversal of 1996859858 is 8589586991.

It can be written as a sum of positive squares in only one way, i.e., 1951607329 + 45252529 = 44177^2 + 6727^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10187963 + ... + 10188158.

Almost surely, 2^1996859858 is an apocalyptic number.

1996859858 is a deficient number, since it is larger than the sum of its proper divisors (1487457004).

1996859858 is a wasteful number, since it uses less digits than its factorization.

1996859858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20376137 (or 20376130 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 68.

The square root of 1996859858 is about 44686.2379038558. The cubic root of 1996859858 is about 1259.2613159970.

The spelling of 1996859858 in words is "one billion, nine hundred ninety-six million, eight hundred fifty-nine thousand, eight hundred fifty-eight".