1380926087 has 2 divisors, whose sum is σ = 1380926088. Its totient is φ = 1380926086.

The previous prime is 1380926081. The next prime is 1380926111. The reversal of 1380926087 is 7806290831.

It is a weak prime.

It is an emirp because it is prime and its reverse (7806290831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1380926087 - 2¹⁴ = 1380909703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380926081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690463043 + 690463044.

It is an arithmetic number, because the mean of its divisors is an integer number (690463044).

Almost surely, 2^1380926087 is an apocalyptic number.

1380926087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380926087 is an equidigital number, since it uses as much as digits as its factorization.

1380926087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1380926087 is about 37160.8138635310. The cubic root of 1380926087 is about 1113.5852708218.

The spelling of 1380926087 in words is "one billion, three hundred eighty million, nine hundred twenty-six thousand, eighty-seven".