1923381087 has 16 divisors (see below), whose sum is σ = 2592962400. Its totient is φ = 1268047872.

The previous prime is 1923381059. The next prime is 1923381107. The reversal of 1923381087 is 7801833291.

It is not a de Polignac number, because 1923381087 - 2⁷ = 1923380959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1923381017) 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 in 15 ways as a sum of consecutive naturals, for example, 740463 + ... + 743055.

It is an arithmetic number, because the mean of its divisors is an integer number (162060150).

Almost surely, 2^1923381087 is an apocalyptic number.

1923381087 is a deficient number, since it is larger than the sum of its proper divisors (669581313).

1923381087 is a wasteful number, since it uses less digits than its factorization.

1923381087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5242.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 1923381087 is about 43856.3688305359. The cubic root of 1923381087 is about 1243.6221456176.

The spelling of 1923381087 in words is "one billion, nine hundred twenty-three million, three hundred eighty-one thousand, eighty-seven".