1930019493 has 32 divisors (see below), whose sum is σ = 2772815616. Its totient is φ = 1190965248.

The previous prime is 1930019489. The next prime is 1930019543. The reversal of 1930019493 is 3949100391.

It is not a de Polignac number, because 1930019493 - 2² = 1930019489 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1930019423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 490771 + ... + 494687.

It is an arithmetic number, because the mean of its divisors is an integer number (86650488).

Almost surely, 2^1930019493 is an apocalyptic number.

It is an amenable number.

1930019493 is a deficient number, since it is larger than the sum of its proper divisors (842796123).

1930019493 is a wasteful number, since it uses less digits than its factorization.

1930019493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 1930019493 is about 43931.9871278320. The cubic root of 1930019493 is about 1245.0512589982.

The spelling of 1930019493 in words is "one billion, nine hundred thirty million, nineteen thousand, four hundred ninety-three".