1922471545428 has 54 divisors (see below), whose sum is σ = 5652981811386. Its totient is φ = 549277583904.

The previous prime is 1922471545427. The next prime is 1922471545439. The reversal of 1922471545428 is 8245451742291.

1922471545428 is a `hidden beast` number, since 1 + 9 + 2 + 2 + 4 + 71 + 545 + 4 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1264990579524 + 657480965904 = 1124718^2 + 810852^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922471545427) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 544916475 + ... + 544920002.

It is an arithmetic number, because the mean of its divisors is an integer number (104684848359).

Almost surely, 2^{1922471545428} is an apocalyptic number.

1922471545428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1922471545428 is an abundant number, since it is smaller than the sum of its proper divisors (3730510265958).

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

1922471545428 is a wasteful number, since it uses less digits than its factorization.

1922471545428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089836501 (or 1089836489 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 1922471545428 in words is "one trillion, nine hundred twenty-two billion, four hundred seventy-one million, five hundred forty-five thousand, four hundred twenty-eight".