1909146361285 has 16 divisors (see below), whose sum is σ = 2354112819072. Its totient is φ = 1485268401600.

The previous prime is 1909146361237. The next prime is 1909146361289. The reversal of 1909146361285 is 5821636419091.

It is not a de Polignac number, because 1909146361285 - 2²⁷ = 1909012143557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1909146361289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2314881 + ... + 3029350.

It is an arithmetic number, because the mean of its divisors is an integer number (147132051192).

Almost surely, 2^{1909146361285} is an apocalyptic number.

It is an amenable number.

1909146361285 is a deficient number, since it is larger than the sum of its proper divisors (444966457787).

1909146361285 is a wasteful number, since it uses less digits than its factorization.

1909146361285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5346204.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 1909146361285 in words is "one trillion, nine hundred nine billion, one hundred forty-six million, three hundred sixty-one thousand, two hundred eighty-five".