2018719820 has 48 divisors (see below), whose sum is σ = 4569451488. Its totient is φ = 744714240.

The previous prime is 2018719739. The next prime is 2018719823. The reversal of 2018719820 is 289178102.

It is not an unprimeable number, because it can be changed into a prime (2018719823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368300 + ... + 373740.

It is an arithmetic number, because the mean of its divisors is an integer number (95196906).

Almost surely, 2^2018719820 is an apocalyptic number.

2018719820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2018719820 is an abundant number, since it is smaller than the sum of its proper divisors (2550731668).

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

2018719820 is a wasteful number, since it uses less digits than its factorization.

2018719820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890 (or 6888 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 2018719820 is about 44930.1660357493. The cubic root of 2018719820 is about 1263.8397648120.

The spelling of 2018719820 in words is "two billion, eighteen million, seven hundred nineteen thousand, eight hundred twenty".