1930480821 has 12 divisors (see below), whose sum is σ = 2798329248. Its totient is φ = 1282437864.

The previous prime is 1930480819. The next prime is 1930480823. The reversal of 1930480821 is 1280840391.

It is an interprime number because it is at equal distance from previous prime (1930480819) and next prime (1930480823).

It is not a de Polignac number, because 1930480821 - 2¹ = 1930480819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1930480823) 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, 376425 + ... + 381518.

It is an arithmetic number, because the mean of its divisors is an integer number (233194104).

Almost surely, 2^1930480821 is an apocalyptic number.

It is an amenable number.

1930480821 is a deficient number, since it is larger than the sum of its proper divisors (867848427).

1930480821 is a wasteful number, since it uses less digits than its factorization.

1930480821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758232 (or 758229 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1930480821 is about 43937.2372936670. The cubic root of 1930480821 is about 1245.1504516491.

The spelling of 1930480821 in words is "one billion, nine hundred thirty million, four hundred eighty thousand, eight hundred twenty-one".