1609252728258 has 16 divisors (see below), whose sum is σ = 3678291950400. Its totient is φ = 459786493776.

The previous prime is 1609252728257. The next prime is 1609252728283. The reversal of 1609252728258 is 8528272529061.

It is a junction number, because it is equal to n+sod(n) for n = 1609252728198 and 1609252728207.

It is not an unprimeable number, because it can be changed into a prime (1609252728253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19157770533 + ... + 19157770616.

It is an arithmetic number, because the mean of its divisors is an integer number (229893246900).

Almost surely, 2^{1609252728258} is an apocalyptic number.

1609252728258 is an abundant number, since it is smaller than the sum of its proper divisors (2069039222142).

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

1609252728258 is a wasteful number, since it uses less digits than its factorization.

1609252728258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38315541161.

The product of its (nonzero) digits is 9676800, while the sum is 57.

The spelling of 1609252728258 in words is "one trillion, six hundred nine billion, two hundred fifty-two million, seven hundred twenty-eight thousand, two hundred fifty-eight".