1849136728 has 8 divisors (see below), whose sum is σ = 3467131380. Its totient is φ = 924568360.

The previous prime is 1849136719. The next prime is 1849136747. The reversal of 1849136728 is 8276319481.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 115571038 + ... + 115571053.

Almost surely, 2^1849136728 is an apocalyptic number.

It is an amenable number.

1849136728 is a deficient number, since it is larger than the sum of its proper divisors (1617994652).

1849136728 is a wasteful number, since it uses less digits than its factorization.

1849136728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231142097 (or 231142093 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 1849136728 is about 43001.5898310749. The cubic root of 1849136728 is about 1227.4100498904.

The spelling of 1849136728 in words is "one billion, eight hundred forty-nine million, one hundred thirty-six thousand, seven hundred twenty-eight".