1201564033 has 4 divisors (see below), whose sum is σ = 1201647040. Its totient is φ = 1201481028.

The previous prime is 1201563983. The next prime is 1201564037. The reversal of 1201564033 is 3304651021.

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: 3304651021 = 7 ⋅472093003.

It is a cyclic number.

It is not a de Polignac number, because 1201564033 - 2¹³ = 1201555841 is a prime.

It is a super-2 number, since 2×1201564033² = 2887512250798450178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201563989 and 1201564007.

It is not an unprimeable number, because it can be changed into a prime (1201564037) 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, 13485 + ... + 50842.

It is an arithmetic number, because the mean of its divisors is an integer number (300411760).

Almost surely, 2^1201564033 is an apocalyptic number.

It is an amenable number.

1201564033 is a deficient number, since it is larger than the sum of its proper divisors (83007).

1201564033 is an equidigital number, since it uses as much as digits as its factorization.

1201564033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83006.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1201564033 is about 34663.5836722056. The cubic root of 1201564033 is about 1063.1200446037.

The spelling of 1201564033 in words is "one billion, two hundred one million, five hundred sixty-four thousand, thirty-three".