1478045069 has 4 divisors (see below), whose sum is σ = 1478122044. Its totient is φ = 1477968096.

The previous prime is 1478045057. The next prime is 1478045077. The reversal of 1478045069 is 9605408741.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9605408741 = 23 ⋅417626467.

It can be written as a sum of positive squares in 2 ways, for example, as 903723844 + 574321225 = 30062^2 + 23965^2 .

It is a cyclic number.

It is not a de Polignac number, because 1478045069 - 2²⁴ = 1461267853 is a prime.

It is a super-2 number, since 2×1478045069² = 4369234451990429522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1478045029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16559 + ... + 56835.

It is an arithmetic number, because the mean of its divisors is an integer number (369530511).

Almost surely, 2^1478045069 is an apocalyptic number.

It is an amenable number.

1478045069 is a deficient number, since it is larger than the sum of its proper divisors (76975).

1478045069 is an equidigital number, since it uses as much as digits as its factorization.

1478045069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76974.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 1478045069 is about 38445.3517216321. The cubic root of 1478045069 is about 1139.1018546553.

The spelling of 1478045069 in words is "one billion, four hundred seventy-eight million, forty-five thousand, sixty-nine".