1351381522 has 4 divisors (see below), whose sum is σ = 2027072286. Its totient is φ = 675690760.

The previous prime is 1351381519. The next prime is 1351381531. The reversal of 1351381522 is 2251831531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 996096721 + 355284801 = 31561^2 + 18849^2 .

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 as a sum of consecutive naturals, namely, 337845379 + ... + 337845382.

Almost surely, 2^1351381522 is an apocalyptic number.

1351381522 is a deficient number, since it is larger than the sum of its proper divisors (675690764).

1351381522 is an equidigital number, since it uses as much as digits as its factorization.

1351381522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675690763.

The product of its digits is 7200, while the sum is 31.

The square root of 1351381522 is about 36761.1414675878. The cubic root of 1351381522 is about 1105.5863262894.

The spelling of 1351381522 in words is "one billion, three hundred fifty-one million, three hundred eighty-one thousand, five hundred twenty-two".