1350861389 has 4 divisors (see below), whose sum is σ = 1361173440. Its totient is φ = 1340549340.

The previous prime is 1350861371. The next prime is 1350861397. The reversal of 1350861389 is 9831680531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9831680531 = 10663 ⋅922037.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1350861389 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 (1350860389) 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, 5155829 + ... + 5156090.

It is an arithmetic number, because the mean of its divisors is an integer number (340293360).

Almost surely, 2^1350861389 is an apocalyptic number.

It is an amenable number.

1350861389 is a deficient number, since it is larger than the sum of its proper divisors (10312051).

1350861389 is a wasteful number, since it uses less digits than its factorization.

1350861389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10312050.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 1350861389 is about 36754.0662920445. The cubic root of 1350861389 is about 1105.4444651110. Note that the first 4 decimals are identical.

The spelling of 1350861389 in words is "one billion, three hundred fifty million, eight hundred sixty-one thousand, three hundred eighty-nine".