1803396507912 has 32 divisors (see below), whose sum is σ = 5009434744800. Its totient is φ = 601132169232.

The previous prime is 1803396507907. The next prime is 1803396507937. The reversal of 1803396507912 is 2197056933081.

1803396507912 is a `hidden beast` number, since 1 + 8 + 0 + 33 + 96 + 507 + 9 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4174528738 + ... + 4174529169.

It is an arithmetic number, because the mean of its divisors is an integer number (156544835775).

Almost surely, 2^{1803396507912} is an apocalyptic number.

1803396507912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1803396507912 is an abundant number, since it is smaller than the sum of its proper divisors (3206038236888).

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

1803396507912 is a wasteful number, since it uses less digits than its factorization.

1803396507912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8349057922 (or 8349057912 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 1803396507912 in words is "one trillion, eight hundred three billion, three hundred ninety-six million, five hundred seven thousand, nine hundred twelve".