1353787385 has 4 divisors (see below), whose sum is σ = 1624544868. Its totient is φ = 1083029904.

The previous prime is 1353787319. The next prime is 1353787399. The reversal of 1353787385 is 5837873531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 628454761 + 725332624 = 25069^2 + 26932^2 .

It is a cyclic number.

It is not a de Polignac number, because 1353787385 - 2²⁰ = 1352738809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135378734 + ... + 135378743.

It is an arithmetic number, because the mean of its divisors is an integer number (406136217).

Almost surely, 2^1353787385 is an apocalyptic number.

It is an amenable number.

1353787385 is a deficient number, since it is larger than the sum of its proper divisors (270757483).

1353787385 is an equidigital number, since it uses as much as digits as its factorization.

1353787385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270757482.

The product of its digits is 2116800, while the sum is 50.

The square root of 1353787385 is about 36793.8498257521. The cubic root of 1353787385 is about 1106.2420286912.

The spelling of 1353787385 in words is "one billion, three hundred fifty-three million, seven hundred eighty-seven thousand, three hundred eighty-five".