1922007 has 4 divisors (see below), whose sum is σ = 2562680. Its totient is φ = 1281336.

The previous prime is 1921981. The next prime is 1922027. The reversal of 1922007 is 7002291.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7002291 = 3 ⋅2334097.

It is not a de Polignac number, because 1922007 - 2⁷ = 1921879 is a prime.

It is a super-2 number, since 2×1922007² = 7388221816098, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922027) 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, 320332 + ... + 320337.

It is an arithmetic number, because the mean of its divisors is an integer number (640670).

2^1922007 is an apocalyptic number.

1922007 is a deficient number, since it is larger than the sum of its proper divisors (640673).

1922007 is an equidigital number, since it uses as much as digits as its factorization.

1922007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640672.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1922007 is about 1386.3646706404. The cubic root of 1922007 is about 124.3325922102.

Adding to 1922007 its reverse (7002291), we get a palindrome (8924298).

The spelling of 1922007 in words is "one million, nine hundred twenty-two thousand, seven".