1606145478 has 16 divisors (see below), whose sum is σ = 3671189760. Its totient is φ = 458898696.

The previous prime is 1606145467. The next prime is 1606145479. The reversal of 1606145478 is 8745416061.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 38241559 = 1606145478 / (1 + 6 + 0 + 6 + 1 + 4 + 5 + 4 + 7 + 8).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606145479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19120738 + ... + 19120821.

It is an arithmetic number, because the mean of its divisors is an integer number (229449360).

Almost surely, 2^1606145478 is an apocalyptic number.

1606145478 is an abundant number, since it is smaller than the sum of its proper divisors (2065044282).

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

1606145478 is a wasteful number, since it uses less digits than its factorization.

1606145478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38241571.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 1606145478 is about 40076.7448528445. The cubic root of 1606145478 is about 1171.1026393829.

The spelling of 1606145478 in words is "one billion, six hundred six million, one hundred forty-five thousand, four hundred seventy-eight".