1356788987 has 2 divisors, whose sum is σ = 1356788988. Its totient is φ = 1356788986.

The previous prime is 1356788977. The next prime is 1356788999. The reversal of 1356788987 is 7898876531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1356788987 - 2⁴ = 1356788971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1356788977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678394493 + 678394494.

It is an arithmetic number, because the mean of its divisors is an integer number (678394494).

Almost surely, 2^1356788987 is an apocalyptic number.

1356788987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356788987 is an equidigital number, since it uses as much as digits as its factorization.

1356788987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 62.

The square root of 1356788987 is about 36834.6166940828. The cubic root of 1356788987 is about 1107.0590076063.

The spelling of 1356788987 in words is "one billion, three hundred fifty-six million, seven hundred eighty-eight thousand, nine hundred eighty-seven".