1201595904 has 160 divisors (see below), whose sum is σ = 3766767840. Its totient is φ = 376897536.

The previous prime is 1201595903. The next prime is 1201595911. The reversal of 1201595904 is 4095951021.

1201595904 is a `hidden beast` number, since 12 + 0 + 1 + 59 + 590 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201595903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232452 + ... + 237564.

It is an arithmetic number, because the mean of its divisors is an integer number (23542299).

Almost surely, 2^1201595904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201595904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1883383920).

1201595904 is an abundant number, since it is smaller than the sum of its proper divisors (2565171936).

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

1201595904 is an equidigital number, since it uses as much as digits as its factorization.

1201595904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5157 (or 5135 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 1201595904 is about 34664.0433879258. The cubic root of 1201595904 is about 1063.1294441304.

The spelling of 1201595904 in words is "one billion, two hundred one million, five hundred ninety-five thousand, nine hundred four".