1936166409 has 16 divisors (see below), whose sum is σ = 2903810240. Its totient is φ = 1290776148.

The previous prime is 1936166399. The next prime is 1936166423. The reversal of 1936166409 is 9046616391.

1936166409 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1936166409 - 2¹⁷ = 1936035337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1936166429) 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, 440467 + ... + 444840.

It is an arithmetic number, because the mean of its divisors is an integer number (181488140).

Almost surely, 2^1936166409 is an apocalyptic number.

It is an amenable number.

1936166409 is a deficient number, since it is larger than the sum of its proper divisors (967643831).

1936166409 is an frugal number, since it uses more digits than its factorization.

1936166409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885328 (or 885310 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 1936166409 is about 44001.8909707299. The cubic root of 1936166409 is about 1246.3716454784.

The spelling of 1936166409 in words is "one billion, nine hundred thirty-six million, one hundred sixty-six thousand, four hundred nine".