1919330109 has 12 divisors (see below), whose sum is σ = 2775198816. Its totient is φ = 1278245832.

The previous prime is 1919330099. The next prime is 1919330131. The reversal of 1919330109 is 9010339191.

It is not a de Polignac number, because 1919330109 - 2²⁸ = 1650894653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919330009) 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, 99627 + ... + 117320.

It is an arithmetic number, because the mean of its divisors is an integer number (231266568).

Almost surely, 2^1919330109 is an apocalyptic number.

It is an amenable number.

1919330109 is a deficient number, since it is larger than the sum of its proper divisors (855868707).

1919330109 is a wasteful number, since it uses less digits than its factorization.

1919330109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217936 (or 217933 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 36.

The square root of 1919330109 is about 43810.1598832965. The cubic root of 1919330109 is about 1242.7484364636.

The spelling of 1919330109 in words is "one billion, nine hundred nineteen million, three hundred thirty thousand, one hundred nine".