1356043987 has 2 divisors, whose sum is σ = 1356043988. Its totient is φ = 1356043986.

The previous prime is 1356043979. The next prime is 1356043991. The reversal of 1356043987 is 7893406531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1356043987 - 2³ = 1356043979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1356043907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678021993 + 678021994.

It is an arithmetic number, because the mean of its divisors is an integer number (678021994).

Almost surely, 2^1356043987 is an apocalyptic number.

1356043987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356043987 is an equidigital number, since it uses as much as digits as its factorization.

1356043987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 1356043987 is about 36824.5025356759. The cubic root of 1356043987 is about 1106.8563452984.

The spelling of 1356043987 in words is "one billion, three hundred fifty-six million, forty-three thousand, nine hundred eighty-seven".