1491992 has 32 divisors (see below), whose sum is σ = 2970000. Its totient is φ = 701568.

The previous prime is 1491991. The next prime is 1492009. The reversal of 1491992 is 2991941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491991) 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, 13634 + ... + 13742.

2^1491992 is an apocalyptic number.

It is an amenable number.

1491992 is a deficient number, since it is larger than the sum of its proper divisors (1478008).

1491992 is a wasteful number, since it uses less digits than its factorization.

1491992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 199 counting only the distinct ones).

The product of its digits is 5832, while the sum is 35.

The square root of 1491992 is about 1221.4712440332. The cubic root of 1491992 is about 114.2673524072.

The spelling of 1491992 in words is "one million, four hundred ninety-one thousand, nine hundred ninety-two".