1491427317 has 8 divisors (see below), whose sum is σ = 1989385696. Its totient is φ = 993876912.

The previous prime is 1491427313. The next prime is 1491427319. The reversal of 1491427317 is 7137241941.

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

It is not a de Polignac number, because 1491427317 - 2² = 1491427313 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 (1491427313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93358 + ... + 108159.

It is an arithmetic number, because the mean of its divisors is an integer number (248673212).

Almost surely, 2^1491427317 is an apocalyptic number.

It is an amenable number.

1491427317 is a deficient number, since it is larger than the sum of its proper divisors (497958379).

1491427317 is a wasteful number, since it uses less digits than its factorization.

1491427317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203987.

The product of its digits is 42336, while the sum is 39.

The square root of 1491427317 is about 38619.0020197312. The cubic root of 1491427317 is about 1142.5293477547.

The spelling of 1491427317 in words is "one billion, four hundred ninety-one million, four hundred twenty-seven thousand, three hundred seventeen".