1646234142 has 64 divisors (see below), whose sum is σ = 3816712704. Its totient is φ = 463656960.

The previous prime is 1646234101. The next prime is 1646234143. The reversal of 1646234142 is 2414326461.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1646234143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1274517 + ... + 1275807.

It is an arithmetic number, because the mean of its divisors is an integer number (59636136).

Almost surely, 2^1646234142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1646234142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1908356352).

1646234142 is an abundant number, since it is smaller than the sum of its proper divisors (2170478562).

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

1646234142 is a wasteful number, since it uses less digits than its factorization.

1646234142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713.

The product of its digits is 27648, while the sum is 33.

The square root of 1646234142 is about 40573.8110361844. The cubic root of 1646234142 is about 1180.7660787147.

The spelling of 1646234142 in words is "one billion, six hundred forty-six million, two hundred thirty-four thousand, one hundred forty-two".