1930475509 has 16 divisors (see below), whose sum is σ = 2044869120. Its totient is φ = 1819480320.

The previous prime is 1930475461. The next prime is 1930475531. The reversal of 1930475509 is 9055740391.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1930475509 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 (1930475549) 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, 588544 + ... + 591814.

It is an arithmetic number, because the mean of its divisors is an integer number (127804320).

Almost surely, 2^1930475509 is an apocalyptic number.

It is an amenable number.

1930475509 is a deficient number, since it is larger than the sum of its proper divisors (114393611).

1930475509 is a wasteful number, since it uses less digits than its factorization.

1930475509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 1930475509 is about 43937.1768437618. The cubic root of 1930475509 is about 1245.1493095769.

The spelling of 1930475509 in words is "one billion, nine hundred thirty million, four hundred seventy-five thousand, five hundred nine".