1494610809 has 8 divisors (see below), whose sum is σ = 1997785632. Its totient is φ = 993921600.

The previous prime is 1494610769. The next prime is 1494610841. The reversal of 1494610809 is 9080164941.

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

It is not a de Polignac number, because 1494610809 - 2¹⁷ = 1494479737 is a prime.

It is a super-2 number, since 2×1494610809² = 4467722940759268962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1494610009) 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, 619999 + ... + 622404.

It is an arithmetic number, because the mean of its divisors is an integer number (249723204).

Almost surely, 2^1494610809 is an apocalyptic number.

It is an amenable number.

1494610809 is a deficient number, since it is larger than the sum of its proper divisors (503174823).

1494610809 is a wasteful number, since it uses less digits than its factorization.

1494610809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242807.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1494610809 is about 38660.1967015172. The cubic root of 1494610809 is about 1143.3416899849.

The spelling of 1494610809 in words is "one billion, four hundred ninety-four million, six hundred ten thousand, eight hundred nine".