1913494209 has 8 divisors (see below), whose sum is σ = 2783264352. Its totient is φ = 1159693440.

The previous prime is 1913494181. The next prime is 1913494217. The reversal of 1913494209 is 9024943191.

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

It is not a de Polignac number, because 1913494209 - 2⁹ = 1913493697 is a prime.

It is a super-2 number, since 2×1913494209² = 7322920175753071362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1913494259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28992304 + ... + 28992369.

It is an arithmetic number, because the mean of its divisors is an integer number (347908044).

Almost surely, 2^1913494209 is an apocalyptic number.

It is an amenable number.

1913494209 is a deficient number, since it is larger than the sum of its proper divisors (869770143).

1913494209 is a wasteful number, since it uses less digits than its factorization.

1913494209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57984687.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 1913494209 is about 43743.5047635646. The cubic root of 1913494209 is about 1241.4875939964.

The spelling of 1913494209 in words is "one billion, nine hundred thirteen million, four hundred ninety-four thousand, two hundred nine".