1516520090 has 8 divisors (see below), whose sum is σ = 2729736180. Its totient is φ = 606608032.

The previous prime is 1516520069. The next prime is 1516520107. The reversal of 1516520090 is 900256151.

It can be written as a sum of positive squares in 2 ways, for example, as 1505517601 + 11002489 = 38801^2 + 3317^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75825995 + ... + 75826014.

Almost surely, 2^1516520090 is an apocalyptic number.

1516520090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1516520090 is a deficient number, since it is larger than the sum of its proper divisors (1213216090).

1516520090 is a wasteful number, since it uses less digits than its factorization.

1516520090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151652016.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 1516520090 is about 38942.5229023493. The cubic root of 1516520090 is about 1148.9013047823.

The spelling of 1516520090 in words is "one billion, five hundred sixteen million, five hundred twenty thousand, ninety".