1491914477 has 8 divisors (see below), whose sum is σ = 1496813472. Its totient is φ = 1487023600.

The previous prime is 1491914453. The next prime is 1491914513. The reversal of 1491914477 is 7744191941.

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

It is a cyclic number.

It is not a de Polignac number, because 1491914477 - 2¹⁸ = 1491652333 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 (1491913477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822902 + ... + 824712.

It is an arithmetic number, because the mean of its divisors is an integer number (187101684).

Almost surely, 2^1491914477 is an apocalyptic number.

It is an amenable number.

1491914477 is a deficient number, since it is larger than the sum of its proper divisors (4898995).

1491914477 is a wasteful number, since it uses less digits than its factorization.

1491914477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4059.

The product of its digits is 254016, while the sum is 47.

The square root of 1491914477 is about 38625.3087625199. The cubic root of 1491914477 is about 1142.6537328543.

The spelling of 1491914477 in words is "one billion, four hundred ninety-one million, nine hundred fourteen thousand, four hundred seventy-seven".