1921367 has 8 divisors (see below), whose sum is σ = 2222976. Its totient is φ = 1626552.

The previous prime is 1921363. The next prime is 1921393. The reversal of 1921367 is 7631291.

1921367 is nontrivially palindromic in base 2 and base 8.

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

It is a cyclic number.

It is not a de Polignac number, because 1921367 - 2² = 1921363 is a prime.

It is a super-2 number, since 2×1921367² = 7383302297378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921363) 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, 1073 + ... + 2234.

It is an arithmetic number, because the mean of its divisors is an integer number (277872).

2^1921367 is an apocalyptic number.

1921367 is a deficient number, since it is larger than the sum of its proper divisors (301609).

1921367 is an equidigital number, since it uses as much as digits as its factorization.

1921367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397.

The product of its digits is 2268, while the sum is 29.

The square root of 1921367 is about 1386.1338319224. The cubic root of 1921367 is about 124.3187903713.

The spelling of 1921367 in words is "one million, nine hundred twenty-one thousand, three hundred sixty-seven".