1011804012 has 18 divisors (see below), whose sum is σ = 2557615788. Its totient is φ = 337267992.

The previous prime is 1011803999. The next prime is 1011804023. The reversal of 1011804012 is 2104081101.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1011804012² = 2047494717398592288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14052798 + ... + 14052869.

It is an arithmetic number, because the mean of its divisors is an integer number (142089766).

Almost surely, 2^1011804012 is an apocalyptic number.

1011804012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011804012 is an abundant number, since it is smaller than the sum of its proper divisors (1545811776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011804012 is a wasteful number, since it uses less digits than its factorization.

1011804012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28105677 (or 28105672 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 1011804012 is about 31808.8668770203. The cubic root of 1011804012 is about 1003.9192897665.

Adding to 1011804012 its reverse (2104081101), we get a palindrome (3115885113).

The spelling of 1011804012 in words is "one billion, eleven million, eight hundred four thousand, twelve".