1100047912 has 8 divisors (see below), whose sum is σ = 2062589850. Its totient is φ = 550023952.

The previous prime is 1100047909. The next prime is 1100047919. The reversal of 1100047912 is 2197400011.

It can be written as a sum of positive squares in only one way, i.e., 1037226436 + 62821476 = 32206^2 + 7926^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1100047919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68752987 + ... + 68753002.

Almost surely, 2^1100047912 is an apocalyptic number.

It is an amenable number.

1100047912 is a deficient number, since it is larger than the sum of its proper divisors (962541938).

1100047912 is a wasteful number, since it uses less digits than its factorization.

1100047912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137505995 (or 137505991 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 1100047912 is about 33166.9701962660. The cubic root of 1100047912 is about 1032.2951026948.

Adding to 1100047912 its reverse (2197400011), we get a palindrome (3297447923).

The spelling of 1100047912 in words is "one billion, one hundred million, forty-seven thousand, nine hundred twelve".