1909685034 has 24 divisors (see below), whose sum is σ = 4138638660. Its totient is φ = 636409728.

The previous prime is 1909685023. The next prime is 1909685047. The reversal of 1909685034 is 4305869091.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1905584409 + 4100625 = 43653^2 + 2025^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85332 + ... + 105360.

Almost surely, 2^1909685034 is an apocalyptic number.

1909685034 is an abundant number, since it is smaller than the sum of its proper divisors (2228953626).

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

1909685034 is a wasteful number, since it uses less digits than its factorization.

1909685034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25334 (or 25331 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1909685034 is about 43699.9431807411. The cubic root of 1909685034 is about 1240.6632408349.

The spelling of 1909685034 in words is "one billion, nine hundred nine million, six hundred eighty-five thousand, thirty-four".