1949212188 has 480 divisors, whose sum is σ = 6869237760. Its totient is φ = 467026560.

The previous prime is 1949212123. The next prime is 1949212249. The reversal of 1949212188 is 8812129491.

1949212188 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 24673533 + ... + 24673611.

It is an arithmetic number, because the mean of its divisors is an integer number (14310912).

Almost surely, 2^1949212188 is an apocalyptic number.

1949212188 is a gapful number since it is divisible by the number (18) 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 1949212188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3434618880).

1949212188 is an abundant number, since it is smaller than the sum of its proper divisors (4920025572).

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

1949212188 is a wasteful number, since it uses less digits than its factorization.

1949212188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 168 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 1949212188 is about 44149.8832161536. The cubic root of 1949212188 is about 1249.1647087285.

The spelling of 1949212188 in words is "one billion, nine hundred forty-nine million, two hundred twelve thousand, one hundred eighty-eight".