1382109887 has 2 divisors, whose sum is σ = 1382109888. Its totient is φ = 1382109886.

The previous prime is 1382109881. The next prime is 1382109899. The reversal of 1382109887 is 7889012831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1382109887 - 2¹⁰ = 1382108863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1382109881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 691054943 + 691054944.

It is an arithmetic number, because the mean of its divisors is an integer number (691054944).

Almost surely, 2^1382109887 is an apocalyptic number.

1382109887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1382109887 is an equidigital number, since it uses as much as digits as its factorization.

1382109887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 1382109887 is about 37176.7385202091. The cubic root of 1382109887 is about 1113.9033872273.

The spelling of 1382109887 in words is "one billion, three hundred eighty-two million, one hundred nine thousand, eight hundred eighty-seven".