1357880243 has 4 divisors (see below), whose sum is σ = 1386771360. Its totient is φ = 1328989128.

The previous prime is 1357880231. The next prime is 1357880261. The reversal of 1357880243 is 3420887531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3420887531 = 29 ⋅117961639.

It is a cyclic number.

It is not a de Polignac number, because 1357880243 - 2⁶ = 1357880179 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1357880243.

It is not an unprimeable number, because it can be changed into a prime (1357880213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14445488 + ... + 14445581.

It is an arithmetic number, because the mean of its divisors is an integer number (346692840).

Almost surely, 2^1357880243 is an apocalyptic number.

1357880243 is a deficient number, since it is larger than the sum of its proper divisors (28891117).

1357880243 is an equidigital number, since it uses as much as digits as its factorization.

1357880243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28891116.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 1357880243 is about 36849.4266305461. The cubic root of 1357880243 is about 1107.3557280386.

The spelling of 1357880243 in words is "one billion, three hundred fifty-seven million, eight hundred eighty thousand, two hundred forty-three".