1351993 has 8 divisors (see below), whose sum is σ = 1454112. Its totient is φ = 1252416.

The previous prime is 1351991. The next prime is 1351997. The reversal of 1351993 is 3991531.

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

It is a cyclic number.

It is not a de Polignac number, because 1351993 - 2¹ = 1351991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1351991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546 + ... + 1732.

It is an arithmetic number, because the mean of its divisors is an integer number (181764).

2^1351993 is an apocalyptic number.

It is an amenable number.

1351993 is a deficient number, since it is larger than the sum of its proper divisors (102119).

1351993 is a wasteful number, since it uses less digits than its factorization.

1351993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271.

The product of its digits is 3645, while the sum is 31.

The square root of 1351993 is about 1162.7523382045. The cubic root of 1351993 is about 110.5753054378.

The spelling of 1351993 in words is "one million, three hundred fifty-one thousand, nine hundred ninety-three".