1578472045 has 8 divisors (see below), whose sum is σ = 1894976280. Its totient is φ = 1262237760.

The previous prime is 1578472033. The next prime is 1578472057. The reversal of 1578472045 is 5402748751.

It is an interprime number because it is at equal distance from previous prime (1578472033) and next prime (1578472057).

It can be written as a sum of positive squares in 4 ways, for example, as 316969 + 1578155076 = 563^2 + 39726^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1578472045 - 2⁹ = 1578471533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1578471992 and 1578472010.

It is a congruent 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, 54390 + ... + 78199.

It is an arithmetic number, because the mean of its divisors is an integer number (236872035).

Almost surely, 2^1578472045 is an apocalyptic number.

It is an amenable number.

1578472045 is a deficient number, since it is larger than the sum of its proper divisors (316504235).

1578472045 is a wasteful number, since it uses less digits than its factorization.

1578472045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134975.

The product of its (nonzero) digits is 313600, while the sum is 43.

The square root of 1578472045 is about 39729.9892398677. The cubic root of 1578472045 is about 1164.3377141606.

The spelling of 1578472045 in words is "one billion, five hundred seventy-eight million, four hundred seventy-two thousand, forty-five".