1513132440 has 64 divisors (see below), whose sum is σ = 4542069600. Its totient is φ = 403264512.

The previous prime is 1513132417. The next prime is 1513132451. The reversal of 1513132440 is 442313151.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1513132440.

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, 313566 + ... + 318354.

Almost surely, 2^1513132440 is an apocalyptic number.

1513132440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1513132440 is an abundant number, since it is smaller than the sum of its proper divisors (3028937160).

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

1513132440 is a wasteful number, since it uses less digits than its factorization.

1513132440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7436 (or 7432 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1513132440 is about 38899.0030720583. The cubic root of 1513132440 is about 1148.0451831011.

Adding to 1513132440 its reverse (442313151), we get a palindrome (1955445591).

The spelling of 1513132440 in words is "one billion, five hundred thirteen million, one hundred thirty-two thousand, four hundred forty".