1601513500 has 48 divisors (see below), whose sum is σ = 3579095520. Its totient is φ = 625699200.

The previous prime is 1601513497. The next prime is 1601513519. The reversal of 1601513500 is 53151061.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15745 + ... + 58744.

It is an arithmetic number, because the mean of its divisors is an integer number (74564490).

Almost surely, 2^1601513500 is an apocalyptic number.

1601513500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1601513500 is an abundant number, since it is smaller than the sum of its proper divisors (1977582020).

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

1601513500 is a wasteful number, since it uses less digits than its factorization.

1601513500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74551 (or 74539 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 1601513500 is about 40018.9142781260. The cubic root of 1601513500 is about 1169.9757707988.

Adding to 1601513500 its reverse (53151061), we get a palindrome (1654664561).

The spelling of 1601513500 in words is "one billion, six hundred one million, five hundred thirteen thousand, five hundred".