1494478001 has 4 divisors (see below), whose sum is σ = 1494619632. Its totient is φ = 1494336372.

The previous prime is 1494477953. The next prime is 1494478021. The reversal of 1494478001 is 1008744941.

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: 1008744941 = 19 ⋅53091839.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1494478001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1494478021) 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, 53591 + ... + 76556.

It is an arithmetic number, because the mean of its divisors is an integer number (373654908).

Almost surely, 2^1494478001 is an apocalyptic number.

It is an amenable number.

1494478001 is a deficient number, since it is larger than the sum of its proper divisors (141631).

1494478001 is a wasteful number, since it uses less digits than its factorization.

1494478001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141630.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1494478001 is about 38658.4790311259. The cubic root of 1494478001 is about 1143.3078239956.

The spelling of 1494478001 in words is "one billion, four hundred ninety-four million, four hundred seventy-eight thousand, one".