1365145550 has 24 divisors (see below), whose sum is σ = 2593200096. Its totient is φ = 534439040.

The previous prime is 1365145541. The next prime is 1365145589. The reversal of 1365145550 is 555415631.

It is a self number, because there is not a number n which added to its sum of digits gives 1365145550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288107 + ... + 292806.

It is an arithmetic number, because the mean of its divisors is an integer number (108050004).

Almost surely, 2^1365145550 is an apocalyptic number.

1365145550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1365145550 is a deficient number, since it is larger than the sum of its proper divisors (1228054546).

1365145550 is a wasteful number, since it uses less digits than its factorization.

1365145550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580972 (or 580967 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 1365145550 is about 36947.8761229925. The cubic root of 1365145550 is about 1109.3271765935.

The spelling of 1365145550 in words is "one billion, three hundred sixty-five million, one hundred forty-five thousand, five hundred fifty".