1891742 has 8 divisors (see below), whose sum is σ = 2903736. Its totient is φ = 923832.

The previous prime is 1891739. The next prime is 1891753. The reversal of 1891742 is 2471981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1891699 and 1891708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10913 + ... + 11084.

It is an arithmetic number, because the mean of its divisors is an integer number (362967).

2^1891742 is an apocalyptic number.

1891742 is a deficient number, since it is larger than the sum of its proper divisors (1011994).

1891742 is a wasteful number, since it uses less digits than its factorization.

1891742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22042.

The product of its digits is 4032, while the sum is 32.

The square root of 1891742 is about 1375.4061218418. The cubic root of 1891742 is about 123.6765329330.

The spelling of 1891742 in words is "one million, eight hundred ninety-one thousand, seven hundred forty-two".