1550885890 has 16 divisors (see below), whose sum is σ = 2795001408. Its totient is φ = 619597296.

The previous prime is 1550885881. The next prime is 1550885933. The reversal of 1550885890 is 985880551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85992 + ... + 102451.

It is an arithmetic number, because the mean of its divisors is an integer number (174687588).

Almost surely, 2^1550885890 is an apocalyptic number.

1550885890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1550885890 is a deficient number, since it is larger than the sum of its proper divisors (1244115518).

1550885890 is a wasteful number, since it uses less digits than its factorization.

1550885890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189273.

The product of its (nonzero) digits is 576000, while the sum is 49.

The square root of 1550885890 is about 39381.2885771911. The cubic root of 1550885890 is about 1157.5149660563.

The spelling of 1550885890 in words is "one billion, five hundred fifty million, eight hundred eighty-five thousand, eight hundred ninety".