1381428567 has 16 divisors (see below), whose sum is σ = 2074598880. Its totient is φ = 908335296.

The previous prime is 1381428547. The next prime is 1381428569. The reversal of 1381428567 is 7658241831.

1381428567 is a `hidden beast` number, since 1 + 3 + 81 + 4 + 2 + 8 + 567 = 666.

It is not a de Polignac number, because 1381428567 - 2⁷ = 1381428439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381428569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348468 + ... + 352409.

It is an arithmetic number, because the mean of its divisors is an integer number (129662430).

Almost surely, 2^1381428567 is an apocalyptic number.

1381428567 is a deficient number, since it is larger than the sum of its proper divisors (693170313).

1381428567 is an equidigital number, since it uses as much as digits as its factorization.

1381428567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700959 (or 700953 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 1381428567 is about 37167.5741339141. The cubic root of 1381428567 is about 1113.7203218520.

The spelling of 1381428567 in words is "one billion, three hundred eighty-one million, four hundred twenty-eight thousand, five hundred sixty-seven".