1388061379 has 2 divisors, whose sum is σ = 1388061380. Its totient is φ = 1388061378.

The previous prime is 1388061341. The next prime is 1388061383. The reversal of 1388061379 is 9731608831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1388061379 - 2²⁷ = 1253843651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1388061329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694030689 + 694030690.

It is an arithmetic number, because the mean of its divisors is an integer number (694030690).

Almost surely, 2^1388061379 is an apocalyptic number.

1388061379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388061379 is an equidigital number, since it uses as much as digits as its factorization.

1388061379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1388061379 is about 37256.6957606280. The cubic root of 1388061379 is about 1115.4999544940.

It can be divided in two parts, 138806 and 1379, that added together give a triangular number (140185 = T₅₂₉).

The spelling of 1388061379 in words is "one billion, three hundred eighty-eight million, sixty-one thousand, three hundred seventy-nine".