1351666144 has 24 divisors (see below), whose sum is σ = 2663220168. Its totient is φ = 675292800.

The previous prime is 1351666079. The next prime is 1351666153. The reversal of 1351666144 is 4416661531.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25399 + ... + 57865.

It is an arithmetic number, because the mean of its divisors is an integer number (110967507).

Almost surely, 2^1351666144 is an apocalyptic number.

It is an amenable number.

1351666144 is a deficient number, since it is larger than the sum of its proper divisors (1311554024).

1351666144 is a wasteful number, since it uses less digits than its factorization.

1351666144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33778 (or 33770 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 1351666144 is about 36765.0124982979. The cubic root of 1351666144 is about 1105.6639387418.

The spelling of 1351666144 in words is "one billion, three hundred fifty-one million, six hundred sixty-six thousand, one hundred forty-four".