1491614847 has 12 divisors (see below), whose sum is σ = 2158500760. Its totient is φ = 992588688.

The previous prime is 1491614801. The next prime is 1491614857. The reversal of 1491614847 is 7484161941.

1491614847 is a `hidden beast` number, since 1 + 4 + 9 + 161 + 484 + 7 = 666.

It is not a de Polignac number, because 1491614847 - 2⁶ = 1491614783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491614857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146572 + ... + 156417.

Almost surely, 2^1491614847 is an apocalyptic number.

1491614847 is a deficient number, since it is larger than the sum of its proper divisors (666885913).

1491614847 is a wasteful number, since it uses less digits than its factorization.

1491614847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303542 (or 303539 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 1491614847 is about 38621.4298932600. The cubic root of 1491614847 is about 1142.5772324324.

The spelling of 1491614847 in words is "one billion, four hundred ninety-one million, six hundred fourteen thousand, eight hundred forty-seven".