1516587380 has 72 divisors (see below), whose sum is σ = 4000827264. Its totient is φ = 472697280.

The previous prime is 1516587343. The next prime is 1516587383. The reversal of 1516587380 is 837856151.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516587383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27824 + ... + 61703.

Almost surely, 2^1516587380 is an apocalyptic number.

1516587380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1516587380 is an abundant number, since it is smaller than the sum of its proper divisors (2484239884).

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

1516587380 is a wasteful number, since it uses less digits than its factorization.

1516587380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89565 (or 89552 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 1516587380 is about 38943.3868583615. The cubic root of 1516587380 is about 1148.9182972872.

The spelling of 1516587380 in words is "one billion, five hundred sixteen million, five hundred eighty-seven thousand, three hundred eighty".