1380354823 has 4 divisors (see below), whose sum is σ = 1396985688. Its totient is φ = 1363723960.

The previous prime is 1380354803. The next prime is 1380354839. The reversal of 1380354823 is 3284530831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3284530831 = 1129 ⋅2909239.

It is a cyclic number.

It is not a de Polignac number, because 1380354823 - 2¹⁷ = 1380223751 is a prime.

It is a super-2 number, since 2×1380354823² = 3810758874758722658, which contains 22 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 (1380354803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8315308 + ... + 8315473.

It is an arithmetic number, because the mean of its divisors is an integer number (349246422).

Almost surely, 2^1380354823 is an apocalyptic number.

1380354823 is a deficient number, since it is larger than the sum of its proper divisors (16630865).

1380354823 is an equidigital number, since it uses as much as digits as its factorization.

1380354823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16630864.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 1380354823 is about 37153.1266921103. The cubic root of 1380354823 is about 1113.4316929865.

The spelling of 1380354823 in words is "one billion, three hundred eighty million, three hundred fifty-four thousand, eight hundred twenty-three".