38142074849 has 2 divisors, whose sum is σ = 38142074850. Its totient is φ = 38142074848.

The previous prime is 38142074813. The next prime is 38142074881. The reversal of 38142074849 is 94847024183.

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., 27645047824 + 10497027025 = 166268^2 + 102455^2 .

It is a cyclic number.

It is not a de Polignac number, because 38142074849 - 2¹² = 38142070753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38142074797 and 38142074806.

It is not a weakly prime, because it can be changed into another prime (38142074809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19071037424 + 19071037425.

It is an arithmetic number, because the mean of its divisors is an integer number (19071037425).

Almost surely, 2^38142074849 is an apocalyptic number.

It is an amenable number.

38142074849 is a deficient number, since it is larger than the sum of its proper divisors (1).

38142074849 is an equidigital number, since it uses as much as digits as its factorization.

38142074849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 38142074849 in words is "thirty-eight billion, one hundred forty-two million, seventy-four thousand, eight hundred forty-nine".