1494467857 has 4 divisors (see below), whose sum is σ = 1573124080. Its totient is φ = 1415811636.

The previous prime is 1494467837. The next prime is 1494467927. The reversal of 1494467857 is 7587644941.

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.

It is a cyclic number.

It is not a de Polignac number, because 1494467857 - 2²³ = 1486079249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1494467798 and 1494467807.

It is not an unprimeable number, because it can be changed into a prime (1494467837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39328083 + ... + 39328120.

It is an arithmetic number, because the mean of its divisors is an integer number (393281020).

Almost surely, 2^1494467857 is an apocalyptic number.

It is an amenable number.

1494467857 is a deficient number, since it is larger than the sum of its proper divisors (78656223).

1494467857 is an equidigital number, since it uses as much as digits as its factorization.

1494467857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78656222.

The product of its digits is 6773760, while the sum is 55.

The square root of 1494467857 is about 38658.3478307079. The cubic root of 1494467857 is about 1143.3052371970.

The spelling of 1494467857 in words is "one billion, four hundred ninety-four million, four hundred sixty-seven thousand, eight hundred fifty-seven".