8187992738 has 8 divisors (see below), whose sum is σ = 12678182400. Its totient is φ = 3961931940.

The previous prime is 8187992723. The next prime is 8187992773. The reversal of 8187992738 is 8372997818.

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

It is a Harshad number since it is a multiple of its sum of digits (62), and also a Moran number because the ratio is a prime number: 132064399 = 8187992738 / (8 + 1 + 8 + 7 + 9 + 9 + 2 + 7 + 3 + 8).

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, 66032138 + ... + 66032261.

It is an arithmetic number, because the mean of its divisors is an integer number (1584772800).

Almost surely, 2^8187992738 is an apocalyptic number.

8187992738 is a deficient number, since it is larger than the sum of its proper divisors (4490189662).

8187992738 is a wasteful number, since it uses less digits than its factorization.

8187992738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132064432.

The product of its digits is 12192768, while the sum is 62.

The square root of 8187992738 is about 90487.5280798409. The cubic root of 8187992738 is about 2015.5449261070.

The spelling of 8187992738 in words is "eight billion, one hundred eighty-seven million, nine hundred ninety-two thousand, seven hundred thirty-eight".