1911934416 has 80 divisors (see below), whose sum is σ = 5664986624. Its totient is φ = 544309632.

The previous prime is 1911934373. The next prime is 1911934429. The reversal of 1911934416 is 6144391191.

It is a super-2 number, since 2×1911934416² = 7310986422170522112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85035 + ... + 105141.

Almost surely, 2^1911934416 is an apocalyptic number.

1911934416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1911934416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2832493312).

1911934416 is an abundant number, since it is smaller than the sum of its proper divisors (3753052208).

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

1911934416 is a wasteful number, since it uses less digits than its factorization.

1911934416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20408 (or 20402 counting only the distinct ones).

The product of its digits is 23328, while the sum is 39.

The square root of 1911934416 is about 43725.6722761354. The cubic root of 1911934416 is about 1241.1501676517.

It can be divided in two parts, 19119 and 34416, that added together give a palindrome (53535).

The spelling of 1911934416 in words is "one billion, nine hundred eleven million, nine hundred thirty-four thousand, four hundred sixteen".