38145820838 has 32 divisors (see below), whose sum is σ = 61124834304. Its totient is φ = 17791183872.

The previous prime is 38145820813. The next prime is 38145820861. The reversal of 38145820838 is 83802854183.

It is a happy number.

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, 4732820 + ... + 4740872.

It is an arithmetic number, because the mean of its divisors is an integer number (1910151072).

Almost surely, 2^38145820838 is an apocalyptic number.

38145820838 is a deficient number, since it is larger than the sum of its proper divisors (22979013466).

38145820838 is a wasteful number, since it uses less digits than its factorization.

38145820838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9296.

The product of its (nonzero) digits is 1474560, while the sum is 50.

The spelling of 38145820838 in words is "thirty-eight billion, one hundred forty-five million, eight hundred twenty thousand, eight hundred thirty-eight".