1806152555406 has 32 divisors (see below), whose sum is σ = 3732299347968. Its totient is φ = 582371797280.

The previous prime is 1806152555399. The next prime is 1806152555407. The reversal of 1806152555406 is 6045552516081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806152555407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39975486 + ... + 40020641.

It is an arithmetic number, because the mean of its divisors is an integer number (116634354624).

Almost surely, 2^{1806152555406} is an apocalyptic number.

1806152555406 is an abundant number, since it is smaller than the sum of its proper divisors (1926146792562).

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

1806152555406 is a wasteful number, since it uses less digits than its factorization.

1806152555406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79996256.

The product of its (nonzero) digits is 1440000, while the sum is 48.

The spelling of 1806152555406 in words is "one trillion, eight hundred six billion, one hundred fifty-two million, five hundred fifty-five thousand, four hundred six".