1580020663 has 8 divisors (see below), whose sum is σ = 1712831456. Its totient is φ = 1448820000.

The previous prime is 1580020661. The next prime is 1580020691. The reversal of 1580020663 is 3660200851.

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 1580020663 - 2¹ = 1580020661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1580020661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400488 + ... + 404413.

It is an arithmetic number, because the mean of its divisors is an integer number (214103932).

Almost surely, 2^1580020663 is an apocalyptic number.

1580020663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1580020663 is a deficient number, since it is larger than the sum of its proper divisors (132810793).

1580020663 is a wasteful number, since it uses less digits than its factorization.

1580020663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805065.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1580020663 is about 39749.4737449441. The cubic root of 1580020663 is about 1164.7183618041.

It can be divided in two parts, 15800 and 20663, that added together give a palindrome (36463).

The spelling of 1580020663 in words is "one billion, five hundred eighty million, twenty thousand, six hundred sixty-three".