1939452228 has 96 divisors (see below), whose sum is σ = 5760491520. Its totient is φ = 552782880.

The previous prime is 1939452223. The next prime is 1939452269. The reversal of 1939452228 is 8222549391.

1939452228 is a `hidden beast` number, since 19 + 3 + 94 + 522 + 28 = 666.

It is a super-2 number, since 2×1939452228² = 7522949889388327968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1939452223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 332013 + ... + 337803.

It is an arithmetic number, because the mean of its divisors is an integer number (60005120).

Almost surely, 2^1939452228 is an apocalyptic number.

1939452228 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 1939452228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2880245760).

1939452228 is an abundant number, since it is smaller than the sum of its proper divisors (3821039292).

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

1939452228 is a wasteful number, since it uses less digits than its factorization.

1939452228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6254 (or 6246 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 1939452228 is about 44039.2123907774. The cubic root of 1939452228 is about 1247.0763089293.

The spelling of 1939452228 in words is "one billion, nine hundred thirty-nine million, four hundred fifty-two thousand, two hundred twenty-eight".