1591950066 has 64 divisors (see below), whose sum is σ = 3751391232. Its totient is φ = 440946432.

The previous prime is 1591949987. The next prime is 1591950067. The reversal of 1591950066 is 6600591951.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1591950067) 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 31 ways as a sum of consecutive naturals, for example, 207450 + ... + 214986.

It is an arithmetic number, because the mean of its divisors is an integer number (58615488).

Almost surely, 2^1591950066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1591950066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1875695616).

1591950066 is an abundant number, since it is smaller than the sum of its proper divisors (2159441166).

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

1591950066 is a wasteful number, since it uses less digits than its factorization.

1591950066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7703.

The product of its (nonzero) digits is 72900, while the sum is 42.

The square root of 1591950066 is about 39899.2489402996. The cubic root of 1591950066 is about 1167.6422839825.

The spelling of 1591950066 in words is "one billion, five hundred ninety-one million, nine hundred fifty thousand, sixty-six".