1928715642 has 24 divisors (see below), whose sum is σ = 4775867616. Its totient is φ = 551061576.

The previous prime is 1928715619. The next prime is 1928715643. The reversal of 1928715642 is 2465178291.

1928715642 is a `hidden beast` number, since 1 + 9 + 2 + 87 + 1 + 564 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1928715643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7653508 + ... + 7653759.

It is an arithmetic number, because the mean of its divisors is an integer number (198994484).

Almost surely, 2^1928715642 is an apocalyptic number.

1928715642 is an abundant number, since it is smaller than the sum of its proper divisors (2847151974).

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

1928715642 is a wasteful number, since it uses less digits than its factorization.

1928715642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15307282 (or 15307279 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 1928715642 is about 43917.1451941039. The cubic root of 1928715642 is about 1244.7708253837.

The spelling of 1928715642 in words is "one billion, nine hundred twenty-eight million, seven hundred fifteen thousand, six hundred forty-two".