1201443764 has 12 divisors (see below), whose sum is σ = 2103348324. Its totient is φ = 600487104.

The previous prime is 1201443743. The next prime is 1201443767. The reversal of 1201443764 is 4673441021.

It can be written as a sum of positive squares in 2 ways, for example, as 1175941264 + 25502500 = 34292^2 + 5050^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1201443764.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201443767) 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, 46919 + ... + 67854.

It is an arithmetic number, because the mean of its divisors is an integer number (175279027).

Almost surely, 2^1201443764 is an apocalyptic number.

It is an amenable number.

1201443764 is a deficient number, since it is larger than the sum of its proper divisors (901904560).

1201443764 is a wasteful number, since it uses less digits than its factorization.

1201443764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117394 (or 117392 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1201443764 is about 34661.8488254738. The cubic root of 1201443764 is about 1063.0845728776.

Adding to 1201443764 its reverse (4673441021), we get a palindrome (5874884785).

The spelling of 1201443764 in words is "one billion, two hundred one million, four hundred forty-three thousand, seven hundred sixty-four".