1355888987 has 2 divisors, whose sum is σ = 1355888988. Its totient is φ = 1355888986.

The previous prime is 1355888977. The next prime is 1355888999. The reversal of 1355888987 is 7898885531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1355888987 - 2⁸ = 1355888731 is a prime.

It is not a weakly prime, because it can be changed into another prime (1355888977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677944493 + 677944494.

It is an arithmetic number, because the mean of its divisors is an integer number (677944494).

Almost surely, 2^1355888987 is an apocalyptic number.

1355888987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355888987 is an equidigital number, since it uses as much as digits as its factorization.

1355888987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19353600, while the sum is 62.

The square root of 1355888987 is about 36822.3978985617. The cubic root of 1355888987 is about 1106.8141713295.

The spelling of 1355888987 in words is "one billion, three hundred fifty-five million, eight hundred eighty-eight thousand, nine hundred eighty-seven".