1642918368 has 192 divisors, whose sum is σ = 5396654592. Its totient is φ = 426055680.

The previous prime is 1642918367. The next prime is 1642918379. The reversal of 1642918368 is 8638192461.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642918367) 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, 531355 + ... + 534437.

It is an arithmetic number, because the mean of its divisors is an integer number (28107576).

Almost surely, 2^1642918368 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 1642918368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2698327296).

1642918368 is an abundant number, since it is smaller than the sum of its proper divisors (3753736224).

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

1642918368 is a wasteful number, since it uses less digits than its factorization.

1642918368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3177 (or 3169 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 1642918368 is about 40532.9294278121. The cubic root of 1642918368 is about 1179.9727964618.

The spelling of 1642918368 in words is "one billion, six hundred forty-two million, nine hundred eighteen thousand, three hundred sixty-eight".