1801415081478 has 32 divisors (see below), whose sum is σ = 3700948195584. Its totient is φ = 584125216992.

The previous prime is 1801415081467. The next prime is 1801415081513. The reversal of 1801415081478 is 8741805141081.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293551 + ... + 1920677.

It is an arithmetic number, because the mean of its divisors is an integer number (115654631112).

Almost surely, 2^{1801415081478} is an apocalyptic number.

1801415081478 is an abundant number, since it is smaller than the sum of its proper divisors (1899533114106).

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

1801415081478 is a wasteful number, since it uses less digits than its factorization.

1801415081478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632156.

The product of its (nonzero) digits is 286720, while the sum is 48.

The spelling of 1801415081478 in words is "one trillion, eight hundred one billion, four hundred fifteen million, eighty-one thousand, four hundred seventy-eight".