1047155188 has 12 divisors (see below), whose sum is σ = 1940317092. Its totient is φ = 492778880.

The previous prime is 1047155177. The next prime is 1047155237. The reversal of 1047155188 is 8815517401.

It can be written as a sum of positive squares in 2 ways, for example, as 456762384 + 590392804 = 21372^2 + 24298^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1047155188.

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 in 3 ways as a sum of consecutive naturals, for example, 7699603 + ... + 7699738.

It is an arithmetic number, because the mean of its divisors is an integer number (161693091).

Almost surely, 2^1047155188 is an apocalyptic number.

It is an amenable number.

1047155188 is a deficient number, since it is larger than the sum of its proper divisors (893161904).

1047155188 is a wasteful number, since it uses less digits than its factorization.

1047155188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15399362 (or 15399360 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 40.

The square root of 1047155188 is about 32359.7773169100. Note that the first 3 decimals coincide. The cubic root of 1047155188 is about 1015.4776038600.

The spelling of 1047155188 in words is "one billion, forty-seven million, one hundred fifty-five thousand, one hundred eighty-eight".