3998526536 has 8 divisors (see below), whose sum is σ = 7497237270. Its totient is φ = 1999263264.

The previous prime is 3998526529. The next prime is 3998526557. The reversal of 3998526536 is 6356258993.

It can be written as a sum of positive squares in only one way, i.e., 3806149636 + 192376900 = 61694^2 + 13870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×3998526536³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249907901 + ... + 249907916.

Almost surely, 2^3998526536 is an apocalyptic number.

It is an amenable number.

3998526536 is a deficient number, since it is larger than the sum of its proper divisors (3498710734).

3998526536 is a wasteful number, since it uses less digits than its factorization.

3998526536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499815823 (or 499815819 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 56.

The square root of 3998526536 is about 63233.9033746929. The cubic root of 3998526536 is about 1587.2061131713.

The spelling of 3998526536 in words is "three billion, nine hundred ninety-eight million, five hundred twenty-six thousand, five hundred thirty-six".