1550039013 has 12 divisors (see below), whose sum is σ = 2267287360. Its totient is φ = 1020278376.

The previous prime is 1550039011. The next prime is 1550039081. The reversal of 1550039013 is 3109300551.

It is not a de Polignac number, because 1550039013 - 2¹ = 1550039011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550039011) by changing a digit.

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, 1089331 + ... + 1090752.

Almost surely, 2^1550039013 is an apocalyptic number.

It is an amenable number.

1550039013 is a deficient number, since it is larger than the sum of its proper divisors (717248347).

1550039013 is a wasteful number, since it uses less digits than its factorization.

1550039013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180168 (or 2180165 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 27.

The square root of 1550039013 is about 39370.5348325369. The cubic root of 1550039013 is about 1157.3042367581.

Adding to 1550039013 its reverse (3109300551), we get a palindrome (4659339564).

The spelling of 1550039013 in words is "one billion, five hundred fifty million, thirty-nine thousand, thirteen".