491361372 has 36 divisors (see below), whose sum is σ = 1245364120. Its totient is φ = 163350432.

The previous prime is 491361371. The next prime is 491361379. The reversal of 491361372 is 273163194.

491361372 is a `hidden beast` number, since 491 + 36 + 137 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491361371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4363 + ... + 31650.

Almost surely, 2^491361372 is an apocalyptic number.

It is an amenable number.

491361372 is an abundant number, since it is smaller than the sum of its proper divisors (754002748).

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

491361372 is a wasteful number, since it uses less digits than its factorization.

491361372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36402 (or 36397 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 491361372 is about 22166.6725513777. The cubic root of 491361372 is about 789.1029565849.

The spelling of 491361372 in words is "four hundred ninety-one million, three hundred sixty-one thousand, three hundred seventy-two".