1920681430 has 32 divisors (see below), whose sum is σ = 3543417504. Its totient is φ = 749177856.

The previous prime is 1920681407. The next prime is 1920681431. The reversal of 1920681430 is 341860291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920681431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286072 + ... + 292708.

It is an arithmetic number, because the mean of its divisors is an integer number (110731797).

Almost surely, 2^1920681430 is an apocalyptic number.

1920681430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1920681430 is a deficient number, since it is larger than the sum of its proper divisors (1622736074).

1920681430 is a wasteful number, since it uses less digits than its factorization.

1920681430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7360.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1920681430 is about 43825.5796310785. The cubic root of 1920681430 is about 1243.0400239790.

The spelling of 1920681430 in words is "one billion, nine hundred twenty million, six hundred eighty-one thousand, four hundred thirty".