491138373 has 8 divisors (see below), whose sum is σ = 714383136. Its totient is φ = 297659600.

The previous prime is 491138369. The next prime is 491138377. The reversal of 491138373 is 373831194.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (491138369) and next prime (491138377).

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 491138373 - 2² = 491138369 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491138377) 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, 7441458 + ... + 7441523.

It is an arithmetic number, because the mean of its divisors is an integer number (89297892).

Almost surely, 2^491138373 is an apocalyptic number.

It is an amenable number.

491138373 is a deficient number, since it is larger than the sum of its proper divisors (223244763).

491138373 is a wasteful number, since it uses less digits than its factorization.

491138373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14882995.

The product of its digits is 54432, while the sum is 39.

The square root of 491138373 is about 22161.6419292434. The cubic root of 491138373 is about 788.9835632643.

The spelling of 491138373 in words is "four hundred ninety-one million, one hundred thirty-eight thousand, three hundred seventy-three".