38857113149 has 2 divisors, whose sum is σ = 38857113150. Its totient is φ = 38857113148.

The previous prime is 38857113103. The next prime is 38857113157. The reversal of 38857113149 is 94131175883.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29925540100 + 8931573049 = 172990^2 + 94507^2 .

It is a cyclic number.

It is not a de Polignac number, because 38857113149 - 2¹⁶ = 38857047613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38857113097 and 38857113106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38857113349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19428556574 + 19428556575.

It is an arithmetic number, because the mean of its divisors is an integer number (19428556575).

Almost surely, 2^38857113149 is an apocalyptic number.

It is an amenable number.

38857113149 is a deficient number, since it is larger than the sum of its proper divisors (1).

38857113149 is an equidigital number, since it uses as much as digits as its factorization.

38857113149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 50.

The spelling of 38857113149 in words is "thirty-eight billion, eight hundred fifty-seven million, one hundred thirteen thousand, one hundred forty-nine".