1350378389 has 4 divisors (see below), whose sum is σ = 1350639756. Its totient is φ = 1350117024.

The previous prime is 1350378373. The next prime is 1350378433. The reversal of 1350378389 is 9838730531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 237622225 + 1112756164 = 15415^2 + 33358^2 .

It is a cyclic number.

It is not a de Polignac number, because 1350378389 - 2⁴ = 1350378373 is a prime.

It is a super-3 number, since 3×1350378389³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1350378349) 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, 122774 + ... + 133319.

It is an arithmetic number, because the mean of its divisors is an integer number (337659939).

Almost surely, 2^1350378389 is an apocalyptic number.

It is an amenable number.

1350378389 is a deficient number, since it is larger than the sum of its proper divisors (261367).

1350378389 is an equidigital number, since it uses as much as digits as its factorization.

1350378389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261366.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 1350378389 is about 36747.4950030611. The cubic root of 1350378389 is about 1105.3126989828.

The spelling of 1350378389 in words is "one billion, three hundred fifty million, three hundred seventy-eight thousand, three hundred eighty-nine".