1934811820 has 24 divisors (see below), whose sum is σ = 4302111744. Its totient is φ = 728399616.

The previous prime is 1934811811. The next prime is 1934811869. The reversal of 1934811820 is 281184391.

It is a self number, because there is not a number n which added to its sum of digits gives 1934811820.

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, 2844972 + ... + 2845651.

It is an arithmetic number, because the mean of its divisors is an integer number (179254656).

Almost surely, 2^1934811820 is an apocalyptic number.

1934811820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1934811820 is an abundant number, since it is smaller than the sum of its proper divisors (2367299924).

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

1934811820 is a wasteful number, since it uses less digits than its factorization.

1934811820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690649 (or 5690647 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 1934811820 is about 43986.4958822591. The cubic root of 1934811820 is about 1246.0809137183.

The spelling of 1934811820 in words is "one billion, nine hundred thirty-four million, eight hundred eleven thousand, eight hundred twenty".