1892981 has 4 divisors (see below), whose sum is σ = 1915872. Its totient is φ = 1870092.

The previous prime is 1892977. The next prime is 1892983.

1892981 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1892981 - 2² = 1892977 is a prime.

It is a super-2 number, since 2×1892981² = 7166754132722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1892983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11321 + ... + 11486.

It is an arithmetic number, because the mean of its divisors is an integer number (478968).

2^1892981 is an apocalyptic number.

It is an amenable number.

1892981 is a deficient number, since it is larger than the sum of its proper divisors (22891).

1892981 is an equidigital number, since it uses as much as digits as its factorization.

1892981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22890.

The product of its digits is 10368, while the sum is 38.

The square root of 1892981 is about 1375.8564605365. The cubic root of 1892981 is about 123.7035277668.

The spelling of 1892981 in words is "one million, eight hundred ninety-two thousand, nine hundred eighty-one".