1201545534 has 64 divisors (see below), whose sum is σ = 2773854720. Its totient is φ = 339888000.

The previous prime is 1201545509. The next prime is 1201545539. The reversal of 1201545534 is 4355451021.

1201545534 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201545539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3088612 + ... + 3089000.

It is an arithmetic number, because the mean of its divisors is an integer number (43341480).

Almost surely, 2^1201545534 is an apocalyptic number.

1201545534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1201545534 is an abundant number, since it is smaller than the sum of its proper divisors (1572309186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201545534 is a wasteful number, since it uses less digits than its factorization.

1201545534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1201545534 is about 34663.3168349482. The cubic root of 1201545534 is about 1063.1145887262.

Adding to 1201545534 its reverse (4355451021), we get a palindrome (5556996555).

The spelling of 1201545534 in words is "one billion, two hundred one million, five hundred forty-five thousand, five hundred thirty-four".