1913450017 has 4 divisors (see below), whose sum is σ = 1996643520. Its totient is φ = 1830256516.

The previous prime is 1913450009. The next prime is 1913450023. The reversal of 1913450017 is 7100543191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7100543191 = 7 ⋅1014363313.

It is a cyclic number.

It is not a de Polignac number, because 1913450017 - 2³ = 1913450009 is a prime.

It is a super-2 number, since 2×1913450017² = 7322581935114600578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1913450087) 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, 41596717 + ... + 41596762.

It is an arithmetic number, because the mean of its divisors is an integer number (499160880).

Almost surely, 2^1913450017 is an apocalyptic number.

It is an amenable number.

1913450017 is a deficient number, since it is larger than the sum of its proper divisors (83193503).

1913450017 is an equidigital number, since it uses as much as digits as its factorization.

1913450017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83193502.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 1913450017 is about 43742.9996342272. Note that the first 3 decimals coincide. The cubic root of 1913450017 is about 1241.4780365696.

The spelling of 1913450017 in words is "one billion, nine hundred thirteen million, four hundred fifty thousand, seventeen".