1045523007438 has 64 divisors (see below), whose sum is σ = 2575060561920. Its totient is φ = 275585317632.

The previous prime is 1045523007421. The next prime is 1045523007439. The reversal of 1045523007438 is 8347003255401.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1045523007438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045523007439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 416106 + ... + 1504722.

It is an arithmetic number, because the mean of its divisors is an integer number (40235321280).

Almost surely, 2^{1045523007438} is an apocalyptic number.

1045523007438 is an abundant number, since it is smaller than the sum of its proper divisors (1529537554482).

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

1045523007438 is a wasteful number, since it uses less digits than its factorization.

1045523007438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090401.

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 1045523007438 in words is "one trillion, forty-five billion, five hundred twenty-three million, seven thousand, four hundred thirty-eight".