1637481066 has 32 divisors (see below), whose sum is σ = 3712511040. Its totient is φ = 477321984.

The previous prime is 1637481061. The next prime is 1637481121. The reversal of 1637481066 is 6601847361.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1637481061) 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, 550975 + ... + 553938.

It is an arithmetic number, because the mean of its divisors is an integer number (116015970).

Almost surely, 2^1637481066 is an apocalyptic number.

1637481066 is an abundant number, since it is smaller than the sum of its proper divisors (2075029974).

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

1637481066 is a wasteful number, since it uses less digits than its factorization.

1637481066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104950.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1637481066 is about 40465.8011906350. The cubic root of 1637481066 is about 1178.6696358852.

The spelling of 1637481066 in words is "one billion, six hundred thirty-seven million, four hundred eighty-one thousand, sixty-six".