1914213913 has 4 divisors (see below), whose sum is σ = 1933166628. Its totient is φ = 1895261200.

The previous prime is 1914213911. The next prime is 1914213941. The reversal of 1914213913 is 3193124191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1666843929 + 247369984 = 40827^2 + 15728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1914213913 - 2¹ = 1914213911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1914213911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9476206 + ... + 9476407.

It is an arithmetic number, because the mean of its divisors is an integer number (483291657).

Almost surely, 2^1914213913 is an apocalyptic number.

It is an amenable number.

1914213913 is a deficient number, since it is larger than the sum of its proper divisors (18952715).

1914213913 is a wasteful number, since it uses less digits than its factorization.

1914213913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18952714.

The product of its digits is 5832, while the sum is 34.

The square root of 1914213913 is about 43751.7304000653. The cubic root of 1914213913 is about 1241.6432240448.

The spelling of 1914213913 in words is "one billion, nine hundred fourteen million, two hundred thirteen thousand, nine hundred thirteen".