1958540 has 12 divisors (see below), whose sum is σ = 4112976. Its totient is φ = 783408.

The previous prime is 1958531. The next prime is 1958557. The reversal of 1958540 is 458591.

It is a junction number, because it is equal to n+sod(n) for n = 1958497 and 1958506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48944 + ... + 48983.

It is an arithmetic number, because the mean of its divisors is an integer number (342748).

2^1958540 is an apocalyptic number.

1958540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1958540 is an abundant number, since it is smaller than the sum of its proper divisors (2154436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1958540 is a wasteful number, since it uses less digits than its factorization.

1958540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97936 (or 97934 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 1958540 is about 1399.4784742896. The cubic root of 1958540 is about 125.1154134052.

The spelling of 1958540 in words is "one million, nine hundred fifty-eight thousand, five hundred forty".