1380298553 has 4 divisors (see below), whose sum is σ = 1380456528. Its totient is φ = 1380140580.

The previous prime is 1380298537. The next prime is 1380298573. The reversal of 1380298553 is 3558920831.

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.

It is a cyclic number.

It is not a de Polignac number, because 1380298553 - 2⁴ = 1380298537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1380298523) 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, 65063 + ... + 83628.

It is an arithmetic number, because the mean of its divisors is an integer number (345114132).

Almost surely, 2^1380298553 is an apocalyptic number.

It is an amenable number.

1380298553 is a deficient number, since it is larger than the sum of its proper divisors (157975).

1380298553 is an equidigital number, since it uses as much as digits as its factorization.

1380298553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157974.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 1380298553 is about 37152.3694129998. The cubic root of 1380298553 is about 1113.4165631441.

The spelling of 1380298553 in words is "one billion, three hundred eighty million, two hundred ninety-eight thousand, five hundred fifty-three".