38781945929 has 8 divisors (see below), whose sum is σ = 41335181568. Its totient is φ = 36258926400.

The previous prime is 38781945911. The next prime is 38781945973. The reversal of 38781945929 is 92954918783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38781945929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38781941929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7551377 + ... + 7556510.

It is an arithmetic number, because the mean of its divisors is an integer number (5166897696).

Almost surely, 2^38781945929 is an apocalyptic number.

It is an amenable number.

38781945929 is a deficient number, since it is larger than the sum of its proper divisors (2553235639).

38781945929 is a wasteful number, since it uses less digits than its factorization.

38781945929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15108055.

The product of its digits is 39191040, while the sum is 65.

The spelling of 38781945929 in words is "thirty-eight billion, seven hundred eighty-one million, nine hundred forty-five thousand, nine hundred twenty-nine".