1958122 has 4 divisors (see below), whose sum is σ = 2937186. Its totient is φ = 979060.

The previous prime is 1958107. The next prime is 1958137. The reversal of 1958122 is 2218591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2218591 = 1217 ⋅1823.

It is an interprime number because it is at equal distance from previous prime (1958107) and next prime (1958137).

It can be written as a sum of positive squares in only one way, i.e., 1164241 + 793881 = 1079^2 + 891^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489529 + ... + 489532.

2^1958122 is an apocalyptic number.

1958122 is a deficient number, since it is larger than the sum of its proper divisors (979064).

1958122 is an equidigital number, since it uses as much as digits as its factorization.

1958122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979063.

The product of its digits is 1440, while the sum is 28.

The square root of 1958122 is about 1399.3291249738. The cubic root of 1958122 is about 125.1065118826.

It can be divided in two parts, 1958 and 122, that added together give a triangular number (2080 = T₆₄).

The spelling of 1958122 in words is "one million, nine hundred fifty-eight thousand, one hundred twenty-two".