1550019842 has 54 divisors (see below), whose sum is σ = 2801075931. Its totient is φ = 641410560.

The previous prime is 1550019827. The next prime is 1550019853. The reversal of 1550019842 is 2489100551.

It can be written as a sum of positive squares in 5 ways, for example, as 44502241 + 1505517601 = 6671^2 + 38801^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=27839.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15979538 + ... + 15979634.

Almost surely, 2^1550019842 is an apocalyptic number.

1550019842 is a deficient number, since it is larger than the sum of its proper divisors (1251056089).

1550019842 is an frugal number, since it uses more digits than its factorization.

1550019842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 1550019842 is about 39370.2913629046. The cubic root of 1550019842 is about 1157.2994655296.

The spelling of 1550019842 in words is "one billion, five hundred fifty million, nineteen thousand, eight hundred forty-two".