38922091840 has 56 divisors (see below), whose sum is σ = 92719748520. Its totient is φ = 15562702848.

The previous prime is 38922091837. The next prime is 38922091843. The reversal of 38922091840 is 4819022983.

It is an interprime number because it is at equal distance from previous prime (38922091837) and next prime (38922091843).

It can be written as a sum of positive squares in 4 ways, for example, as 4263567616 + 34658524224 = 65296^2 + 186168^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38922091843) 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, 837864 + ... + 883096.

It is an arithmetic number, because the mean of its divisors is an integer number (1655709795).

Almost surely, 2^38922091840 is an apocalyptic number.

It is an amenable number.

38922091840 is an abundant number, since it is smaller than the sum of its proper divisors (53797656680).

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

38922091840 is a wasteful number, since it uses less digits than its factorization.

38922091840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47939 (or 47929 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 38922091840 in words is "thirty-eight billion, nine hundred twenty-two million, ninety-one thousand, eight hundred forty".