38213491680 has 1152 divisors, whose sum is σ = 173299875840. Its totient is φ = 7445053440.

The previous prime is 38213491639. The next prime is 38213491691. The reversal of 38213491680 is 8619431283.

38213491680 is a `hidden beast` number, since 3 + 82 + 1 + 3 + 491 + 6 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 93431316 + ... + 93431724.

It is an arithmetic number, because the mean of its divisors is an integer number (150433920).

Almost surely, 2^38213491680 is an apocalyptic number.

38213491680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38213491680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86649937920).

38213491680 is an abundant number, since it is smaller than the sum of its proper divisors (135086384160).

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

38213491680 is a wasteful number, since it uses less digits than its factorization.

38213491680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 38213491680 in words is "thirty-eight billion, two hundred thirteen million, four hundred ninety-one thousand, six hundred eighty".