1922139 has 18 divisors (see below), whose sum is σ = 2953340. Its totient is φ = 1204416.

The previous prime is 1922119. The next prime is 1922147. The reversal of 1922139 is 9312291.

It is not a de Polignac number, because 1922139 - 2⁸ = 1921883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1922119) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2232 + ... + 2970.

2^1922139 is an apocalyptic number.

1922139 is a deficient number, since it is larger than the sum of its proper divisors (1031201).

1922139 is a wasteful number, since it uses less digits than its factorization.

1922139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 759 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 1922139 is about 1386.4122763450. The cubic root of 1922139 is about 124.3354384583.

The spelling of 1922139 in words is "one million, nine hundred twenty-two thousand, one hundred thirty-nine".