1515994480 has 240 divisors, whose sum is σ = 4771069632. Its totient is φ = 435916800.

The previous prime is 1515994463. The next prime is 1515994481. The reversal of 1515994480 is 844995151.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1515994480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1515994481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 880020 + ... + 881740.

Almost surely, 2^1515994480 is an apocalyptic number.

1515994480 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 1515994480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2385534816).

1515994480 is an abundant number, since it is smaller than the sum of its proper divisors (3255075152).

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

1515994480 is a wasteful number, since it uses less digits than its factorization.

1515994480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776 (or 1759 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 46.

The square root of 1515994480 is about 38935.7737819605. The cubic root of 1515994480 is about 1148.7685570533.

The spelling of 1515994480 in words is "one billion, five hundred fifteen million, nine hundred ninety-four thousand, four hundred eighty".