387338111969 has 2 divisors, whose sum is σ = 387338111970. Its totient is φ = 387338111968.

The previous prime is 387338111933. The next prime is 387338111987. The reversal of 387338111969 is 969111833783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 330092764369 + 57245347600 = 574537^2 + 239260^2 .

It is a cyclic number.

It is not a de Polignac number, because 387338111969 - 2³⁶ = 318618635233 is a prime.

It is a super-2 number, since 2×387338111969² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (387338111569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193669055984 + 193669055985.

It is an arithmetic number, because the mean of its divisors is an integer number (193669055985).

Almost surely, 2^387338111969 is an apocalyptic number.

It is an amenable number.

387338111969 is a deficient number, since it is larger than the sum of its proper divisors (1).

387338111969 is an equidigital number, since it uses as much as digits as its factorization.

387338111969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 59.

The spelling of 387338111969 in words is "three hundred eighty-seven billion, three hundred thirty-eight million, one hundred eleven thousand, nine hundred sixty-nine".