1405785445018 has 16 divisors (see below), whose sum is σ = 2116441773504. Its totient is φ = 700305467680.

The previous prime is 1405785444983. The next prime is 1405785445063. The reversal of 1405785445018 is 8105445875041.

It is a happy number.

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, 4564371 + ... + 4862617.

It is an arithmetic number, because the mean of its divisors is an integer number (132277610844).

Almost surely, 2^{1405785445018} is an apocalyptic number.

1405785445018 is a deficient number, since it is larger than the sum of its proper divisors (710656328486).

1405785445018 is a wasteful number, since it uses less digits than its factorization.

1405785445018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306917.

The product of its (nonzero) digits is 3584000, while the sum is 52.

The spelling of 1405785445018 in words is "one trillion, four hundred five billion, seven hundred eighty-five million, four hundred forty-five thousand, eighteen".