4992643620 has 144 divisors (see below), whose sum is σ = 15966332928. Its totient is φ = 1260944640.

The previous prime is 4992643583. The next prime is 4992643627. The reversal of 4992643620 is 263462994.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (4992643627) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 252742 + ... + 271778.

It is an arithmetic number, because the mean of its divisors is an integer number (110877312).

Almost surely, 2^4992643620 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 4992643620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7983166464).

4992643620 is an abundant number, since it is smaller than the sum of its proper divisors (10973689308).

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

4992643620 is a wasteful number, since it uses less digits than its factorization.

4992643620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19130 (or 19125 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 4992643620 is about 70658.6415097262. The cubic root of 4992643620 is about 1709.1369195383.

The spelling of 4992643620 in words is "four billion, nine hundred ninety-two million, six hundred forty-three thousand, six hundred twenty".