7513081000 has 48 divisors (see below), whose sum is σ = 17587025820. Its totient is φ = 3004136000.

The previous prime is 7513080907. The next prime is 7513081001. The reversal of 7513081000 is 1803157.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 6937956 + 7506143044 = 2634^2 + 86638^2 .

It is a super-2 number, since 2×7513081000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (7513081001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2739630 + ... + 2742370.

Almost surely, 2^7513081000 is an apocalyptic number.

It is an amenable number.

7513081000 is an abundant number, since it is smaller than the sum of its proper divisors (10073944820).

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

7513081000 is an frugal number, since it uses more digits than its factorization.

7513081000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5503 (or 2748 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 7513081000 is about 86678.0306652153. The cubic root of 7513081000 is about 1958.5711681367.

Adding to 7513081000 its reverse (1803157), we get a palindrome (7514884157).

The spelling of 7513081000 in words is "seven billion, five hundred thirteen million, eighty-one thousand".