1928745552 has 20 divisors (see below), whose sum is σ = 4982592800. Its totient is φ = 642915168.

The previous prime is 1928745529. The next prime is 1928745563. The reversal of 1928745552 is 2555478291.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 40182199 = 1928745552 / (1 + 9 + 2 + 8 + 7 + 4 + 5 + 5 + 5 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20091052 + ... + 20091147.

It is an arithmetic number, because the mean of its divisors is an integer number (249129640).

Almost surely, 2^1928745552 is an apocalyptic number.

1928745552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1928745552 is an abundant number, since it is smaller than the sum of its proper divisors (3053847248).

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

1928745552 is a wasteful number, since it uses less digits than its factorization.

1928745552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40182210 (or 40182204 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 48.

The square root of 1928745552 is about 43917.4857203825. The cubic root of 1928745552 is about 1244.7772598734. Note that the first 3 decimals are identical.

The spelling of 1928745552 in words is "one billion, nine hundred twenty-eight million, seven hundred forty-five thousand, five hundred fifty-two".