38548684621 has 2 divisors, whose sum is σ = 38548684622. Its totient is φ = 38548684620.

The previous prime is 38548684571. The next prime is 38548684631. The reversal of 38548684621 is 12648684583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35783397225 + 2765287396 = 189165^2 + 52586^2 .

It is a cyclic number.

It is not a de Polignac number, because 38548684621 - 2¹¹ = 38548682573 is a prime.

It is a super-3 number, since 3×38548684621³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38548684631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19274342310 + 19274342311.

It is an arithmetic number, because the mean of its divisors is an integer number (19274342311).

Almost surely, 2^38548684621 is an apocalyptic number.

It is an amenable number.

38548684621 is a deficient number, since it is larger than the sum of its proper divisors (1).

38548684621 is an equidigital number, since it uses as much as digits as its factorization.

38548684621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8847360, while the sum is 55.

The spelling of 38548684621 in words is "thirty-eight billion, five hundred forty-eight million, six hundred eighty-four thousand, six hundred twenty-one".