1301601520 has 40 divisors (see below), whose sum is σ = 3029114160. Its totient is φ = 520143360.

The previous prime is 1301601451. The next prime is 1301601523. The reversal of 1301601520 is 251061031.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301601523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83115 + ... + 97525.

It is an arithmetic number, because the mean of its divisors is an integer number (75727854).

Almost surely, 2^1301601520 is an apocalyptic number.

1301601520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301601520 is an abundant number, since it is smaller than the sum of its proper divisors (1727512640).

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

1301601520 is a wasteful number, since it uses less digits than its factorization.

1301601520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15553 (or 15547 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1301601520 is about 36077.7150052494. The cubic root of 1301601520 is about 1091.8408754349.

Adding to 1301601520 its reverse (251061031), we get a palindrome (1552662551).

The spelling of 1301601520 in words is "one billion, three hundred one million, six hundred one thousand, five hundred twenty".