1550190020 has 12 divisors (see below), whose sum is σ = 3255399084. Its totient is φ = 620076000.

The previous prime is 1550190007. The next prime is 1550190029. The reversal of 1550190020 is 200910551.

It can be written as a sum of positive squares in 2 ways, for example, as 486908356 + 1063281664 = 22066^2 + 32608^2 .

It is not an unprimeable number, because it can be changed into a prime (1550190029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38754731 + ... + 38754770.

It is an arithmetic number, because the mean of its divisors is an integer number (271283257).

Almost surely, 2^1550190020 is an apocalyptic number.

1550190020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1550190020 is an abundant number, since it is smaller than the sum of its proper divisors (1705209064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1550190020 is a wasteful number, since it uses less digits than its factorization.

1550190020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77509510 (or 77509508 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 1550190020 is about 39372.4525525144. The cubic root of 1550190020 is about 1157.3418176114.

The spelling of 1550190020 in words is "one billion, five hundred fifty million, one hundred ninety thousand, twenty".