1955958 has 8 divisors (see below), whose sum is σ = 3911928. Its totient is φ = 651984.

The previous prime is 1955957. The next prime is 1955959. The reversal of 1955958 is 8595591.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1955957) and next prime (1955959).

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

1955958 is an admirable number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162991 + ... + 163002.

It is an arithmetic number, because the mean of its divisors is an integer number (488991).

2^1955958 is an apocalyptic number.

1955958 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1955958 is a wasteful number, since it uses less digits than its factorization.

1955958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325998.

The product of its digits is 81000, while the sum is 42.

The square root of 1955958 is about 1398.5556835536. Note that the first 3 decimals coincide. The cubic root of 1955958 is about 125.0604081355.

The spelling of 1955958 in words is "one million, nine hundred fifty-five thousand, nine hundred fifty-eight".