1494905947 has 4 divisors (see below), whose sum is σ = 1495050480. Its totient is φ = 1494761416.

The previous prime is 1494905917. The next prime is 1494905957. The reversal of 1494905947 is 7495094941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7495094941 = 11467 ⋅653623.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1494905947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1494905894 and 1494905903.

It is not an unprimeable number, because it can be changed into a prime (1494905917) 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, 55447 + ... + 77872.

It is an arithmetic number, because the mean of its divisors is an integer number (373762620).

Almost surely, 2^1494905947 is an apocalyptic number.

1494905947 is a deficient number, since it is larger than the sum of its proper divisors (144533).

1494905947 is a wasteful number, since it uses less digits than its factorization.

1494905947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144532.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 1494905947 is about 38664.0135914522. The cubic root of 1494905947 is about 1143.4169428799.

The spelling of 1494905947 in words is "one billion, four hundred ninety-four million, nine hundred five thousand, nine hundred forty-seven".