1533270649 has 3 divisors (see below), whose sum is σ = 1533309807. Its totient is φ = 1533231492.

The previous prime is 1533270637. The next prime is 1533270653. The reversal of 1533270649 is 9460723351.

It is a happy number.

The square root of 1533270649 is 39157.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9460723351 = 1279 ⋅7396969.

It can be written as a sum of positive squares in only one way, i.e., 1304293225 + 228977424 = 36115^2 + 15132^2 .

It is not a de Polignac number, because 1533270649 - 2¹¹ = 1533268601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1533270149) 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 2 ways as a sum of consecutive naturals, for example, 19579 + ... + 58735.

It is an arithmetic number, because the mean of its divisors is an integer number (511103269).

Almost surely, 2^1533270649 is an apocalyptic number.

1533270649 is the 39157-th square number.

1533270649 is the 19579-th centered octagonal number.

It is an amenable number.

1533270649 is a deficient number, since it is larger than the sum of its proper divisors (39158).

1533270649 is an frugal number, since it uses more digits than its factorization.

1533270649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78314 (or 39157 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 40.

The cubic root of 1533270649 is about 1153.1158473619.

The spelling of 1533270649 in words is "one billion, five hundred thirty-three million, two hundred seventy thousand, six hundred forty-nine".