1380218743 has 4 divisors (see below), whose sum is σ = 1380408480. Its totient is φ = 1380029008.

The previous prime is 1380218677. The next prime is 1380218783. The reversal of 1380218743 is 3478120831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3478120831 = 17 ⋅204595343.

It is a cyclic number.

It is not a de Polignac number, because 1380218743 - 2¹⁷ = 1380087671 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 (1380218783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83503 + ... + 98656.

It is an arithmetic number, because the mean of its divisors is an integer number (345102120).

Almost surely, 2^1380218743 is an apocalyptic number.

1380218743 is a deficient number, since it is larger than the sum of its proper divisors (189737).

1380218743 is an equidigital number, since it uses as much as digits as its factorization.

1380218743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189736.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 1380218743 is about 37151.2953071626. The cubic root of 1380218743 is about 1113.3951031760.

The spelling of 1380218743 in words is "one billion, three hundred eighty million, two hundred eighteen thousand, seven hundred forty-three".