1662123354 has 64 divisors (see below), whose sum is σ = 3674160000. Its totient is φ = 499066880.

The previous prime is 1662123347. The next prime is 1662123391. The reversal of 1662123354 is 4533212661.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 217897 + ... + 225395.

It is an arithmetic number, because the mean of its divisors is an integer number (57408750).

Almost surely, 2^1662123354 is an apocalyptic number.

1662123354 is an abundant number, since it is smaller than the sum of its proper divisors (2012036646).

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

1662123354 is a wasteful number, since it uses less digits than its factorization.

1662123354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7615.

The product of its digits is 25920, while the sum is 33.

The square root of 1662123354 is about 40769.1470845295. The cubic root of 1662123354 is about 1184.5527825140.

The spelling of 1662123354 in words is "one billion, six hundred sixty-two million, one hundred twenty-three thousand, three hundred fifty-four".