1665938334 has 16 divisors (see below), whose sum is σ = 3366227088. Its totient is φ = 549587712.

The previous prime is 1665938303. The next prime is 1665938353. The reversal of 1665938334 is 4338395661.

It is a congruent 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, 1430637 + ... + 1431800.

It is an arithmetic number, because the mean of its divisors is an integer number (210389193).

Almost surely, 2^1665938334 is an apocalyptic number.

1665938334 is an abundant number, since it is smaller than the sum of its proper divisors (1700288754).

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

1665938334 is a wasteful number, since it uses less digits than its factorization.

1665938334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862539.

The product of its digits is 1399680, while the sum is 48.

The square root of 1665938334 is about 40815.9078546588. The cubic root of 1665938334 is about 1185.4583695606.

The spelling of 1665938334 in words is "one billion, six hundred sixty-five million, nine hundred thirty-eight thousand, three hundred thirty-four".