1513263420 has 144 divisors (see below), whose sum is σ = 4717440000. Its totient is φ = 392491008.

The previous prime is 1513263391. The next prime is 1513263431. The reversal of 1513263420 is 243623151.

1513263420 is a `hidden beast` number, since 1 + 5 + 1 + 3 + 2 + 634 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1210956 + ... + 1212204.

It is an arithmetic number, because the mean of its divisors is an integer number (32760000).

Almost surely, 2^1513263420 is an apocalyptic number.

1513263420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1513263420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2358720000).

1513263420 is an abundant number, since it is smaller than the sum of its proper divisors (3204176580).

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

1513263420 is a wasteful number, since it uses less digits than its factorization.

1513263420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1513263420 is about 38900.6866263309. The cubic root of 1513263420 is about 1148.0783078991.

Adding to 1513263420 its reverse (243623151), we get a palindrome (1756886571).

The spelling of 1513263420 in words is "one billion, five hundred thirteen million, two hundred sixty-three thousand, four hundred twenty".