1395733249 has 4 divisors (see below), whose sum is σ = 1395810864. Its totient is φ = 1395655636.

The previous prime is 1395733237. The next prime is 1395733279. The reversal of 1395733249 is 9423375931.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9423375931 = 23 ⋅409711997.

It is a cyclic number.

It is not a de Polignac number, because 1395733249 - 2¹¹ = 1395731201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1395733199 and 1395733208.

It is not an unprimeable number, because it can be changed into a prime (1395733279) 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, 3654 + ... + 52960.

It is an arithmetic number, because the mean of its divisors is an integer number (348952716).

Almost surely, 2^1395733249 is an apocalyptic number.

It is an amenable number.

1395733249 is a deficient number, since it is larger than the sum of its proper divisors (77615).

1395733249 is an equidigital number, since it uses as much as digits as its factorization.

1395733249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77614.

The product of its digits is 612360, while the sum is 46.

The square root of 1395733249 is about 37359.5135005797. The cubic root of 1395733249 is about 1117.5513172203.

The spelling of 1395733249 in words is "one billion, three hundred ninety-five million, seven hundred thirty-three thousand, two hundred forty-nine".