1885149428 has 12 divisors (see below), whose sum is σ = 3301146660. Its totient is φ = 941964672.

The previous prime is 1885149407. The next prime is 1885149443. The reversal of 1885149428 is 8249415881.

It can be written as a sum of positive squares in 2 ways, for example, as 151093264 + 1734056164 = 12292^2 + 41642^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145523 + ... + 157946.

It is an arithmetic number, because the mean of its divisors is an integer number (275095555).

Almost surely, 2^1885149428 is an apocalyptic number.

It is an amenable number.

1885149428 is a deficient number, since it is larger than the sum of its proper divisors (1415997232).

1885149428 is a wasteful number, since it uses less digits than its factorization.

1885149428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305026 (or 305024 counting only the distinct ones).

The product of its digits is 737280, while the sum is 50.

The square root of 1885149428 is about 43418.3075211367. The cubic root of 1885149428 is about 1235.3269805745.

The spelling of 1885149428 in words is "one billion, eight hundred eighty-five million, one hundred forty-nine thousand, four hundred twenty-eight".