1934845209 has 12 divisors (see below), whose sum is σ = 3048847152. Its totient is φ = 1172633400.

The previous prime is 1934845207. The next prime is 1934845223. The reversal of 1934845209 is 9025484391.

1934845209 is a `hidden beast` number, since 19 + 34 + 84 + 520 + 9 = 666.

It is not a de Polignac number, because 1934845209 - 2¹ = 1934845207 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1934845207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9771847 + ... + 9772044.

It is an arithmetic number, because the mean of its divisors is an integer number (254070596).

Almost surely, 2^1934845209 is an apocalyptic number.

It is an amenable number.

1934845209 is a deficient number, since it is larger than the sum of its proper divisors (1114001943).

1934845209 is a wasteful number, since it uses less digits than its factorization.

1934845209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19543908 (or 19543905 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 1934845209 is about 43986.8754175606. The cubic root of 1934845209 is about 1246.0880815396.

The spelling of 1934845209 in words is "one billion, nine hundred thirty-four million, eight hundred forty-five thousand, two hundred nine".