16831948644 has 81 divisors (see below), whose sum is σ = 49509972057. Its totient is φ = 4807571328.

The previous prime is 16831948633. The next prime is 16831948663. The reversal of 16831948644 is 44684913861.

The square root of 16831948644 is 129738.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 15465907044 + 1366041600 = 124362^2 + 36960^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5447452 + ... + 5450540.

Almost surely, 2^16831948644 is an apocalyptic number.

16831948644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16831948644 is the 129738-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16831948644

16831948644 is an abundant number, since it is smaller than the sum of its proper divisors (32678023413).

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

16831948644 is an equidigital number, since it uses as much as digits as its factorization.

16831948644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6202 (or 3101 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 16831948644 in words is "sixteen billion, eight hundred thirty-one million, nine hundred forty-eight thousand, six hundred forty-four".