491337144 has 32 divisors (see below), whose sum is σ = 1364826000. Its totient is φ = 163778976.

The previous prime is 491337137. The next prime is 491337151. The reversal of 491337144 is 441733194.

It is an interprime number because it is at equal distance from previous prime (491337137) and next prime (491337151).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 491337099 and 491337108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137139 + ... + 1137570.

Almost surely, 2^491337144 is an apocalyptic number.

It is an amenable number.

491337144 is an abundant number, since it is smaller than the sum of its proper divisors (873488856).

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

491337144 is a wasteful number, since it uses less digits than its factorization.

491337144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274724 (or 2274714 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 491337144 is about 22166.1260485453. The cubic root of 491337144 is about 789.0899867004.

The spelling of 491337144 in words is "four hundred ninety-one million, three hundred thirty-seven thousand, one hundred forty-four".