1959958 has 48 divisors (see below), whose sum is σ = 4021920. Its totient is φ = 696960.

The previous prime is 1959949. The next prime is 1959961. The reversal of 1959958 is 8599591.

It is an Ulam number.

It is a plaindrome in base 15.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 21978 + ... + 22066.

It is an arithmetic number, because the mean of its divisors is an integer number (83790).

2^1959958 is an apocalyptic number.

1959958 is an abundant number, since it is smaller than the sum of its proper divisors (2061962).

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

1959958 is a wasteful number, since it uses less digits than its factorization.

1959958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 122 counting only the distinct ones).

The product of its digits is 145800, while the sum is 46.

The square root of 1959958 is about 1399.9849999196. The cubic root of 1959958 is about 125.1456010036.

It can be divided in two parts, 195 and 9958, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 1959958 in words is "one million, nine hundred fifty-nine thousand, nine hundred fifty-eight".