1365691087 has 2 divisors, whose sum is σ = 1365691088. Its totient is φ = 1365691086.

The previous prime is 1365691069. The next prime is 1365691133. The reversal of 1365691087 is 7801965631.

It is a happy number.

It is an a-pointer prime, because the next prime (1365691133) can be obtained adding 1365691087 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1365691087 - 2¹⁵ = 1365658319 is a prime.

It is a super-2 number, since 2×1365691087² = 3730224290222483138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1365691007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682845543 + 682845544.

It is an arithmetic number, because the mean of its divisors is an integer number (682845544).

Almost surely, 2^1365691087 is an apocalyptic number.

1365691087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1365691087 is an equidigital number, since it uses as much as digits as its factorization.

1365691087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 1365691087 is about 36955.2579073668. The cubic root of 1365691087 is about 1109.4749260219.

The spelling of 1365691087 in words is "one billion, three hundred sixty-five million, six hundred ninety-one thousand, eighty-seven".