1387438812167 has 2 divisors, whose sum is σ = 1387438812168. Its totient is φ = 1387438812166.

The previous prime is 1387438812119. The next prime is 1387438812211. The reversal of 1387438812167 is 7612188347831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1387438812167 - 2¹² = 1387438808071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1387431812167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693719406083 + 693719406084.

It is an arithmetic number, because the mean of its divisors is an integer number (693719406084).

Almost surely, 2^{1387438812167} is an apocalyptic number.

1387438812167 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387438812167 is an equidigital number, since it uses as much as digits as its factorization.

1387438812167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10838016, while the sum is 59.

The spelling of 1387438812167 in words is "one trillion, three hundred eighty-seven billion, four hundred thirty-eight million, eight hundred twelve thousand, one hundred sixty-seven".