1466691444 has 18 divisors (see below), whose sum is σ = 3707470130. Its totient is φ = 488897136.

The previous prime is 1466691409. The next prime is 1466691451. The reversal of 1466691444 is 4441966641.

It can be written as a sum of positive squares in only one way, i.e., 1184048100 + 282643344 = 34410^2 + 16812^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1466691444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20370679 + ... + 20370750.

Almost surely, 2^1466691444 is an apocalyptic number.

It is an amenable number.

1466691444 is an abundant number, since it is smaller than the sum of its proper divisors (2240778686).

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

1466691444 is a wasteful number, since it uses less digits than its factorization.

1466691444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40741439 (or 40741434 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 1466691444 is about 38297.4077973954. The cubic root of 1466691444 is about 1136.1776785579.

The spelling of 1466691444 in words is "one billion, four hundred sixty-six million, six hundred ninety-one thousand, four hundred forty-four".