1929372481 has 2 divisors, whose sum is σ = 1929372482. Its totient is φ = 1929372480.

The previous prime is 1929372479. The next prime is 1929372559. The reversal of 1929372481 is 1842739291.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1685513025 + 243859456 = 41055^2 + 15616^2 .

It is a cyclic number.

It is not a de Polignac number, because 1929372481 - 2¹ = 1929372479 is a prime.

It is a super-2 number, since 2×1929372481² = 7444956340880190722, which contains 22 as substring.

Together with 1929372479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1929372421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 964686240 + 964686241.

It is an arithmetic number, because the mean of its divisors is an integer number (964686241).

Almost surely, 2^1929372481 is an apocalyptic number.

It is an amenable number.

1929372481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1929372481 is an equidigital number, since it uses as much as digits as its factorization.

1929372481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 1929372481 is about 43924.6227189261. The cubic root of 1929372481 is about 1244.9121147836.

The spelling of 1929372481 in words is "one billion, nine hundred twenty-nine million, three hundred seventy-two thousand, four hundred eighty-one".