1380939827 has 2 divisors, whose sum is σ = 1380939828. Its totient is φ = 1380939826.

The previous prime is 1380939823. The next prime is 1380939851. The reversal of 1380939827 is 7289390831.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1380939827 - 2² = 1380939823 is a prime.

It is not a weakly prime, because it can be changed into another prime (1380939823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690469913 + 690469914.

It is an arithmetic number, because the mean of its divisors is an integer number (690469914).

Almost surely, 2^1380939827 is an apocalyptic number.

1380939827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380939827 is an equidigital number, since it uses as much as digits as its factorization.

1380939827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 1380939827 is about 37160.9987352332. The cubic root of 1380939827 is about 1113.5889641430.

The spelling of 1380939827 in words is "one billion, three hundred eighty million, nine hundred thirty-nine thousand, eight hundred twenty-seven".