8139791763 has 36 divisors (see below), whose sum is σ = 12253001880. Its totient is φ = 5340580992.

The previous prime is 8139791761. The next prime is 8139791797. The reversal of 8139791763 is 3671979318.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

8139791763 is a `hidden beast` number, since 81 + 397 + 9 + 176 + 3 = 666.

It is not a de Polignac number, because 8139791763 - 2¹ = 8139791761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8139791761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 45473608 + ... + 45473786.

Almost surely, 2^8139791763 is an apocalyptic number.

8139791763 is a deficient number, since it is larger than the sum of its proper divisors (4113210117).

8139791763 is an frugal number, since it uses more digits than its factorization.

8139791763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 279 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 54.

The square root of 8139791763 is about 90220.7945154552. The cubic root of 8139791763 is about 2011.5821114566.

The spelling of 8139791763 in words is "eight billion, one hundred thirty-nine million, seven hundred ninety-one thousand, seven hundred sixty-three".