1585421466 has 16 divisors (see below), whose sum is σ = 3172089600. Its totient is φ = 528266048.

The previous prime is 1585421443. The next prime is 1585421477. The reversal of 1585421466 is 6641245851.

It is a super-2 number, since 2×1585421466² = 5027122449707178312, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 34986 + ... + 66293.

It is an arithmetic number, because the mean of its divisors is an integer number (198255600).

Almost surely, 2^1585421466 is an apocalyptic number.

1585421466 is an abundant number, since it is smaller than the sum of its proper divisors (1586668134).

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

1585421466 is a wasteful number, since it uses less digits than its factorization.

1585421466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103893.

The product of its digits is 230400, while the sum is 42.

The square root of 1585421466 is about 39817.3513182381. The cubic root of 1585421466 is about 1166.0439269022.

The spelling of 1585421466 in words is "one billion, five hundred eighty-five million, four hundred twenty-one thousand, four hundred sixty-six".