1920218464 has 48 divisors (see below), whose sum is σ = 3899399616. Its totient is φ = 930304000.

The previous prime is 1920218453. The next prime is 1920218471. The reversal of 1920218464 is 4648120291.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145584 + ... + 158224.

It is an arithmetic number, because the mean of its divisors is an integer number (81237492).

Almost surely, 2^1920218464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1920218464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1949699808).

1920218464 is an abundant number, since it is smaller than the sum of its proper divisors (1979181152).

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

1920218464 is a wasteful number, since it uses less digits than its factorization.

1920218464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12799 (or 12791 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 1920218464 is about 43820.2973974390. The cubic root of 1920218464 is about 1242.9401407633.

The spelling of 1920218464 in words is "one billion, nine hundred twenty million, two hundred eighteen thousand, four hundred sixty-four".