38499381660 has 48 divisors (see below), whose sum is σ = 110091856896. Its totient is φ = 10048064832.

The previous prime is 38499381659. The next prime is 38499381671. The reversal of 38499381660 is 6618399483.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 38499381660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6823312 + ... + 6828951.

It is an arithmetic number, because the mean of its divisors is an integer number (2293580352).

Almost surely, 2^38499381660 is an apocalyptic number.

38499381660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38499381660 is an abundant number, since it is smaller than the sum of its proper divisors (71592475236).

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

38499381660 is a wasteful number, since it uses less digits than its factorization.

38499381660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13652322 (or 13652320 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 57.

The spelling of 38499381660 in words is "thirty-eight billion, four hundred ninety-nine million, three hundred eighty-one thousand, six hundred sixty".