1605145260 has 48 divisors (see below), whose sum is σ = 4544920800. Its totient is φ = 423227904.

The previous prime is 1605145259. The next prime is 1605145261. The reversal of 1605145260 is 625415061.

It is an interprime number because it is at equal distance from previous prime (1605145259) and next prime (1605145261).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1605145261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144955 + ... + 155634.

It is an arithmetic number, because the mean of its divisors is an integer number (94685850).

Almost surely, 2^1605145260 is an apocalyptic number.

1605145260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1605145260 is an abundant number, since it is smaller than the sum of its proper divisors (2939775540).

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

1605145260 is a wasteful number, since it uses less digits than its factorization.

1605145260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300690 (or 300688 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1605145260 is about 40064.2641265255. The cubic root of 1605145260 is about 1170.8594897238.

The spelling of 1605145260 in words is "one billion, six hundred five million, one hundred forty-five thousand, two hundred sixty".