8124782690 has 16 divisors (see below), whose sum is σ = 14626241280. Its totient is φ = 3249550320.

The previous prime is 8124782623. The next prime is 8124782713. The reversal of 8124782690 is 962874218.

It is a happy number.

It is a super-2 number, since 2×8124782690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60485 + ... + 141095.

It is an arithmetic number, because the mean of its divisors is an integer number (914140080).

Almost surely, 2^8124782690 is an apocalyptic number.

8124782690 is a deficient number, since it is larger than the sum of its proper divisors (6501458590).

8124782690 is a wasteful number, since it uses less digits than its factorization.

8124782690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90697.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 8124782690 is about 90137.5764595432. The cubic root of 8124782690 is about 2010.3449561826.

The spelling of 8124782690 in words is "eight billion, one hundred twenty-four million, seven hundred eighty-two thousand, six hundred ninety".