1350998643 has 4 divisors (see below), whose sum is σ = 1801331528. Its totient is φ = 900665760.

The previous prime is 1350998641. The next prime is 1350998689. The reversal of 1350998643 is 3468990531.

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

It is not a de Polignac number, because 1350998643 - 2¹ = 1350998641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1350998592 and 1350998601.

It is not an unprimeable number, because it can be changed into a prime (1350998641) 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, 225166438 + ... + 225166443.

It is an arithmetic number, because the mean of its divisors is an integer number (450332882).

Almost surely, 2^1350998643 is an apocalyptic number.

1350998643 is a deficient number, since it is larger than the sum of its proper divisors (450332885).

1350998643 is an equidigital number, since it uses as much as digits as its factorization.

1350998643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450332884.

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 1350998643 is about 36755.9334393782. The cubic root of 1350998643 is about 1105.4819033306.

The spelling of 1350998643 in words is "one billion, three hundred fifty million, nine hundred ninety-eight thousand, six hundred forty-three".