491374372 has 6 divisors (see below), whose sum is σ = 859905158. Its totient is φ = 245687184.

The previous prime is 491374343. The next prime is 491374379. The reversal of 491374372 is 273473194.

It can be written as a sum of positive squares in only one way, i.e., 449694436 + 41679936 = 21206^2 + 6456^2 .

It is not an unprimeable number, because it can be changed into a prime (491374379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61421793 + ... + 61421800.

Almost surely, 2^491374372 is an apocalyptic number.

It is an amenable number.

491374372 is a deficient number, since it is larger than the sum of its proper divisors (368530786).

491374372 is a wasteful number, since it uses less digits than its factorization.

491374372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122843597 (or 122843595 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The square root of 491374372 is about 22166.9657824430. The cubic root of 491374372 is about 789.1099156504.

The spelling of 491374372 in words is "four hundred ninety-one million, three hundred seventy-four thousand, three hundred seventy-two".