1912934391 has 8 divisors (see below), whose sum is σ = 2632856064. Its totient is φ = 1234151160.

The previous prime is 1912934351. The next prime is 1912934393. The reversal of 1912934391 is 1934392191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1912934391 - 2⁹ = 1912933879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1912934393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10284501 + ... + 10284686.

It is an arithmetic number, because the mean of its divisors is an integer number (329107008).

Almost surely, 2^1912934391 is an apocalyptic number.

1912934391 is a deficient number, since it is larger than the sum of its proper divisors (719921673).

1912934391 is a wasteful number, since it uses less digits than its factorization.

1912934391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20569221.

The product of its digits is 52488, while the sum is 42.

The square root of 1912934391 is about 43737.1054254851. The cubic root of 1912934391 is about 1241.3665109907.

The spelling of 1912934391 in words is "one billion, nine hundred twelve million, nine hundred thirty-four thousand, three hundred ninety-one".