1891492 has 12 divisors (see below), whose sum is σ = 3342976. Its totient is φ = 936360.

The previous prime is 1891489. The next prime is 1891499. The reversal of 1891492 is 2941981.

It is not an unprimeable number, because it can be changed into a prime (1891499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1884 + ... + 2707.

2^1891492 is an apocalyptic number.

It is an amenable number.

1891492 is a deficient number, since it is larger than the sum of its proper divisors (1451484).

1891492 is a wasteful number, since it uses less digits than its factorization.

1891492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4698 (or 4696 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The square root of 1891492 is about 1375.3152365912. The cubic root of 1891492 is about 123.6710846045.

It can be divided in two parts, 189 and 1492, that added together give a square (1681 = 41²).

The spelling of 1891492 in words is "one million, eight hundred ninety-one thousand, four hundred ninety-two".