1201500633 has 4 divisors (see below), whose sum is σ = 1602000848. Its totient is φ = 801000420.

The previous prime is 1201500631. The next prime is 1201500673. The reversal of 1201500633 is 3360051021.

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 an emirpimes, since its reverse is a distinct semiprime: 3360051021 = 3 ⋅1120017007.

It is not a de Polignac number, because 1201500633 - 2¹ = 1201500631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201500631) 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, 200250103 + ... + 200250108.

It is an arithmetic number, because the mean of its divisors is an integer number (400500212).

Almost surely, 2^1201500633 is an apocalyptic number.

It is an amenable number.

1201500633 is a deficient number, since it is larger than the sum of its proper divisors (400500215).

1201500633 is an equidigital number, since it uses as much as digits as its factorization.

1201500633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400500214.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1201500633 is about 34662.6691557358. The cubic root of 1201500633 is about 1063.1013459203.

Adding to 1201500633 its reverse (3360051021), we get a palindrome (4561551654).

The spelling of 1201500633 in words is "one billion, two hundred one million, five hundred thousand, six hundred thirty-three".