1958013 has 20 divisors (see below), whose sum is σ = 3055008. Its totient is φ = 1247400.

The previous prime is 1957999. The next prime is 1958029. The reversal of 1958013 is 3108591.

It is not a de Polignac number, because 1958013 - 2⁴ = 1957997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

1958013 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1958063) 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 19 ways as a sum of consecutive naturals, for example, 1338 + ... + 2388.

2^1958013 is an apocalyptic number.

It is an amenable number.

1958013 is a deficient number, since it is larger than the sum of its proper divisors (1096995).

1958013 is a wasteful number, since it uses less digits than its factorization.

1958013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086 (or 1077 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1958013 is about 1399.2901771970. The cubic root of 1958013 is about 125.1041904640.

The spelling of 1958013 in words is "one million, nine hundred fifty-eight thousand, thirteen".