1201545807 has 128 divisors (see below), whose sum is σ = 2217984000. Its totient is φ = 571536000.

The previous prime is 1201545803. The next prime is 1201545809. The reversal of 1201545807 is 7085451021.

1201545807 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1201545807 - 2² = 1201545803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201545803) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7957182 + ... + 7957332.

It is an arithmetic number, because the mean of its divisors is an integer number (17328000).

Almost surely, 2^1201545807 is an apocalyptic number.

1201545807 is a deficient number, since it is larger than the sum of its proper divisors (1016438193).

1201545807 is a wasteful number, since it uses less digits than its factorization.

1201545807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 1201545807 is about 34663.3207728284. The cubic root of 1201545807 is about 1063.1146692420.

Adding to 1201545807 its reverse (7085451021), we get a palindrome (8286996828).

The spelling of 1201545807 in words is "one billion, two hundred one million, five hundred forty-five thousand, eight hundred seven".