1491312486 has 32 divisors (see below), whose sum is σ = 3035455488. Its totient is φ = 488376000.

The previous prime is 1491312481. The next prime is 1491312503. The reversal of 1491312486 is 6842131941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491312481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68986 + ... + 87986.

It is an arithmetic number, because the mean of its divisors is an integer number (94857984).

Almost surely, 2^1491312486 is an apocalyptic number.

1491312486 is an abundant number, since it is smaller than the sum of its proper divisors (1544143002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1491312486 is a wasteful number, since it uses less digits than its factorization.

1491312486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19236.

The product of its digits is 41472, while the sum is 39.

The square root of 1491312486 is about 38617.5152748076. The cubic root of 1491312486 is about 1142.5000243557.

The spelling of 1491312486 in words is "one billion, four hundred ninety-one million, three hundred twelve thousand, four hundred eighty-six".