8157937788 has 384 divisors, whose sum is σ = 28901376000. Its totient is φ = 1921294080.

The previous prime is 8157937783. The next prime is 8157937789. The reversal of 8157937788 is 8877397518.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8157937783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6377733 + ... + 6379011.

It is an arithmetic number, because the mean of its divisors is an integer number (75264000).

Almost surely, 2^8157937788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8157937788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14450688000).

8157937788 is an abundant number, since it is smaller than the sum of its proper divisors (20743438212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8157937788 is a wasteful number, since it uses less digits than its factorization.

8157937788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382 (or 1374 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 63.

The square root of 8157937788 is about 90321.3030685452. The cubic root of 8157937788 is about 2013.0758076555.

The spelling of 8157937788 in words is "eight billion, one hundred fifty-seven million, nine hundred thirty-seven thousand, seven hundred eighty-eight".