1550195899 has 12 divisors (see below), whose sum is σ = 1865473200. Its totient is φ = 1282919568.

The previous prime is 1550195891. The next prime is 1550195917. The reversal of 1550195899 is 9985910551.

It is not a de Polignac number, because 1550195899 - 2³ = 1550195891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1550195891) 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 in 11 ways as a sum of consecutive naturals, for example, 544039 + ... + 546880.

It is an arithmetic number, because the mean of its divisors is an integer number (155456100).

Almost surely, 2^1550195899 is an apocalyptic number.

1550195899 is a deficient number, since it is larger than the sum of its proper divisors (315277301).

1550195899 is a wasteful number, since it uses less digits than its factorization.

1550195899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090962 (or 1090955 counting only the distinct ones).

The product of its (nonzero) digits is 729000, while the sum is 52.

The square root of 1550195899 is about 39372.5272112421. The cubic root of 1550195899 is about 1157.3432806587.

The spelling of 1550195899 in words is "one billion, five hundred fifty million, one hundred ninety-five thousand, eight hundred ninety-nine".