1374215009 has 4 divisors (see below), whose sum is σ = 1455051204. Its totient is φ = 1293378816.

The previous prime is 1374214987. The next prime is 1374215047. The reversal of 1374215009 is 9005124731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9005124731 = 227 ⋅39670153.

It can be written as a sum of positive squares in 2 ways, for example, as 475894225 + 898320784 = 21815^2 + 29972^2 .

It is a cyclic number.

It is not a de Polignac number, because 1374215009 - 2¹² = 1374210913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1374215069) 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, 40418072 + ... + 40418105.

It is an arithmetic number, because the mean of its divisors is an integer number (363762801).

Almost surely, 2^1374215009 is an apocalyptic number.

It is an amenable number.

1374215009 is a deficient number, since it is larger than the sum of its proper divisors (80836195).

1374215009 is an equidigital number, since it uses as much as digits as its factorization.

1374215009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80836194.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1374215009 is about 37070.4061078376. The cubic root of 1374215009 is about 1111.7783923527.

The spelling of 1374215009 in words is "one billion, three hundred seventy-four million, two hundred fifteen thousand, nine".