1914681851923 has 4 divisors (see below), whose sum is σ = 1914850068688. Its totient is φ = 1914513635160.

The previous prime is 1914681851911. The next prime is 1914681851983. The reversal of 1914681851923 is 3291581864191.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1914681851923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1914681851983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84091308 + ... + 84114073.

It is an arithmetic number, because the mean of its divisors is an integer number (478712517172).

Almost surely, 2^{1914681851923} is an apocalyptic number.

1914681851923 is a deficient number, since it is larger than the sum of its proper divisors (168216765).

1914681851923 is a wasteful number, since it uses less digits than its factorization.

1914681851923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168216764.

The product of its digits is 3732480, while the sum is 58.

The spelling of 1914681851923 in words is "one trillion, nine hundred fourteen billion, six hundred eighty-one million, eight hundred fifty-one thousand, nine hundred twenty-three".