1513403540 has 48 divisors (see below), whose sum is σ = 3490107264. Its totient is φ = 546672000.

The previous prime is 1513403537. The next prime is 1513403543. The reversal of 1513403540 is 453043151.

It is an interprime number because it is at equal distance from previous prime (1513403537) and next prime (1513403543).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1513403543) 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, 10442 + ... + 55998.

It is an arithmetic number, because the mean of its divisors is an integer number (72710568).

Almost surely, 2^1513403540 is an apocalyptic number.

1513403540 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 1513403540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1745053632).

1513403540 is an abundant number, since it is smaller than the sum of its proper divisors (1976703724).

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

1513403540 is a wasteful number, since it uses less digits than its factorization.

1513403540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45728 (or 45726 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1513403540 is about 38902.4875811303. The cubic root of 1513403540 is about 1148.1137420840.

Adding to 1513403540 its reverse (453043151), we get a palindrome (1966446691).

The spelling of 1513403540 in words is "one billion, five hundred thirteen million, four hundred three thousand, five hundred forty".