1599040145 has 8 divisors (see below), whose sum is σ = 2031721704. Its totient is φ = 1203983104.

The previous prime is 1599040123. The next prime is 1599040169. The reversal of 1599040145 is 5410409951.

It is a Cunningham number, because it is equal to 39988²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 575616064 + 1023424081 = 23992^2 + 31991^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1599040145 - 2⁶ = 1599040081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1599040099 and 1599040108.

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, 9406034 + ... + 9406203.

It is an arithmetic number, because the mean of its divisors is an integer number (253965213).

Almost surely, 2^1599040145 is an apocalyptic number.

It is an amenable number.

1599040145 is a deficient number, since it is larger than the sum of its proper divisors (432681559).

1599040145 is a wasteful number, since it uses less digits than its factorization.

1599040145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18812259.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 1599040145 is about 39988.0000125038. Note that the first 4 decimals coincide. The cubic root of 1599040145 is about 1169.3731624122.

The spelling of 1599040145 in words is "one billion, five hundred ninety-nine million, forty thousand, one hundred forty-five".