1913815745 has 8 divisors (see below), whose sum is σ = 2335504320. Its totient is φ = 1505102320.

The previous prime is 1913815697. The next prime is 1913815751. The reversal of 1913815745 is 5475183191.

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

It is not a de Polignac number, because 1913815745 - 2²⁴ = 1897038529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1913815696 and 1913815705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3243461 + ... + 3244050.

It is an arithmetic number, because the mean of its divisors is an integer number (291938040).

Almost surely, 2^1913815745 is an apocalyptic number.

It is an amenable number.

1913815745 is a deficient number, since it is larger than the sum of its proper divisors (421688575).

1913815745 is an equidigital number, since it uses as much as digits as its factorization.

1913815745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6487575.

The product of its digits is 151200, while the sum is 44.

The square root of 1913815745 is about 43747.1798519630. The cubic root of 1913815745 is about 1241.5571283237.

The spelling of 1913815745 in words is "one billion, nine hundred thirteen million, eight hundred fifteen thousand, seven hundred forty-five".