1351685983 has 4 divisors (see below), whose sum is σ = 1352096560. Its totient is φ = 1351275408.

The previous prime is 1351685957. The next prime is 1351685989. The reversal of 1351685983 is 3895861531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3895861531 = 131 ⋅29739401.

It is a cyclic number.

It is not a de Polignac number, because 1351685983 - 2⁹ = 1351685471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351685989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200310 + ... + 206947.

It is an arithmetic number, because the mean of its divisors is an integer number (338024140).

Almost surely, 2^1351685983 is an apocalyptic number.

1351685983 is a deficient number, since it is larger than the sum of its proper divisors (410577).

1351685983 is an equidigital number, since it uses as much as digits as its factorization.

1351685983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410576.

The product of its digits is 777600, while the sum is 49.

The square root of 1351685983 is about 36765.2823054577. The cubic root of 1351685983 is about 1105.6693481544.

It can be divided in two parts, 13516 and 85983, that added together give a palindrome (99499).

The spelling of 1351685983 in words is "one billion, three hundred fifty-one million, six hundred eighty-five thousand, nine hundred eighty-three".