1939471872 has 320 divisors, whose sum is σ = 6005615616. Its totient is φ = 551485440.

The previous prime is 1939471867. The next prime is 1939471901. The reversal of 1939471872 is 2781749391.

It is a super-2 number, since 2×1939471872² = 7523102284558368768, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18829773 + ... + 18829875.

Almost surely, 2^1939471872 is an apocalyptic number.

1939471872 is a gapful number since it is divisible by the number (12) 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 1939471872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3002807808).

1939471872 is an abundant number, since it is smaller than the sum of its proper divisors (4066143744).

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

1939471872 is a wasteful number, since it uses less digits than its factorization.

1939471872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 185 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 1939471872 is about 44039.4354187244. The cubic root of 1939471872 is about 1247.0805193079.

The spelling of 1939471872 in words is "one billion, nine hundred thirty-nine million, four hundred seventy-one thousand, eight hundred seventy-two".