8413993642 has 8 divisors (see below), whose sum is σ = 12827892132. Its totient is φ = 4138029600.

The previous prime is 8413993633. The next prime is 8413993661. The reversal of 8413993642 is 2463993148.

It can be written as a sum of positive squares in 2 ways, for example, as 6551121721 + 1862871921 = 80939^2 + 43161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×8413993642³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34483459 + ... + 34483702.

Almost surely, 2^8413993642 is an apocalyptic number.

8413993642 is a deficient number, since it is larger than the sum of its proper divisors (4413898490).

8413993642 is a wasteful number, since it uses less digits than its factorization.

8413993642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68967224.

The product of its digits is 1119744, while the sum is 49.

The square root of 8413993642 is about 91727.8237068775. The cubic root of 8413993642 is about 2033.9209037823.

The spelling of 8413993642 in words is "eight billion, four hundred thirteen million, nine hundred ninety-three thousand, six hundred forty-two".