1516380540 has 24 divisors (see below), whose sum is σ = 4245865680. Its totient is φ = 404368128.

The previous prime is 1516380529. The next prime is 1516380553. The reversal of 1516380540 is 450836151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12636445 + ... + 12636564.

It is an arithmetic number, because the mean of its divisors is an integer number (176911070).

Almost surely, 2^1516380540 is an apocalyptic number.

1516380540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1516380540 is an abundant number, since it is smaller than the sum of its proper divisors (2729485140).

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

1516380540 is a wasteful number, since it uses less digits than its factorization.

1516380540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25273021 (or 25273019 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 1516380540 is about 38940.7311179438. The cubic root of 1516380540 is about 1148.8660631137.

It can be divided in two parts, 15163 and 80540, that added together give a triangular number (95703 = T₄₃₇).

The spelling of 1516380540 in words is "one billion, five hundred sixteen million, three hundred eighty thousand, five hundred forty".