1351121439 has 16 divisors (see below), whose sum is σ = 1822284128. Its totient is φ = 890376192.

The previous prime is 1351121411. The next prime is 1351121459. The reversal of 1351121439 is 9341211531.

It is not a de Polignac number, because 1351121439 - 2⁸ = 1351121183 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 (1351121459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287799 + ... + 292455.

It is an arithmetic number, because the mean of its divisors is an integer number (113892758).

Almost surely, 2^1351121439 is an apocalyptic number.

1351121439 is a deficient number, since it is larger than the sum of its proper divisors (471162689).

1351121439 is an equidigital number, since it uses as much as digits as its factorization.

1351121439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5754.

The product of its digits is 3240, while the sum is 30.

The square root of 1351121439 is about 36757.6038256032. The cubic root of 1351121439 is about 1105.5153957510.

The spelling of 1351121439 in words is "one billion, three hundred fifty-one million, one hundred twenty-one thousand, four hundred thirty-nine".