38347721492 has 24 divisors (see below), whose sum is σ = 68325106080. Its totient is φ = 18827336160.

The previous prime is 38347721441. The next prime is 38347721507. The reversal of 38347721492 is 29412774383.

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 38347721492.

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 7 ways as a sum of consecutive naturals, for example, 9359 + ... + 277097.

It is an arithmetic number, because the mean of its divisors is an integer number (2846879420).

Almost surely, 2^38347721492 is an apocalyptic number.

It is an amenable number.

38347721492 is a deficient number, since it is larger than the sum of its proper divisors (29977384588).

38347721492 is a wasteful number, since it uses less digits than its factorization.

38347721492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268391 (or 268389 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 50.

The spelling of 38347721492 in words is "thirty-eight billion, three hundred forty-seven million, seven hundred twenty-one thousand, four hundred ninety-two".