1930849919 has 8 divisors (see below), whose sum is σ = 2046760560. Its totient is φ = 1815198336.

The previous prime is 1930849913. The next prime is 1930849933. The reversal of 1930849919 is 9199480391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1930849919 - 2⁴ = 1930849903 is a prime.

It is a super-2 number, since 2×1930849919² = 7456362819404613122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1930849913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49304 + ... + 79325.

It is an arithmetic number, because the mean of its divisors is an integer number (255845070).

Almost surely, 2^1930849919 is an apocalyptic number.

1930849919 is a deficient number, since it is larger than the sum of its proper divisors (115910641).

1930849919 is a wasteful number, since it uses less digits than its factorization.

1930849919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129529.

The product of its (nonzero) digits is 629856, while the sum is 53.

The square root of 1930849919 is about 43941.4373797672. The cubic root of 1930849919 is about 1245.2298020454.

The spelling of 1930849919 in words is "one billion, nine hundred thirty million, eight hundred forty-nine thousand, nine hundred nineteen".