1646023674 has 16 divisors (see below), whose sum is σ = 3485697408. Its totient is φ = 516399552.

The previous prime is 1646023667. The next prime is 1646023733. The reversal of 1646023674 is 4763206461.

It is a happy number.

1646023674 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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, 8068642 + ... + 8068845.

It is an arithmetic number, because the mean of its divisors is an integer number (217856088).

Almost surely, 2^1646023674 is an apocalyptic number.

1646023674 is an abundant number, since it is smaller than the sum of its proper divisors (1839673734).

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

1646023674 is a wasteful number, since it uses less digits than its factorization.

1646023674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16137509.

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 1646023674 is about 40571.2173098121. The cubic root of 1646023674 is about 1180.7157569814.

The spelling of 1646023674 in words is "one billion, six hundred forty-six million, twenty-three thousand, six hundred seventy-four".