1671540516 has 48 divisors (see below), whose sum is σ = 4336147200. Its totient is φ = 556855776.

The previous prime is 1671540509. The next prime is 1671540517. The reversal of 1671540516 is 6150451761.

It is a happy number.

1671540516 is a `hidden beast` number, since 1 + 67 + 1 + 540 + 51 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1671540517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246021 + ... + 252723.

It is an arithmetic number, because the mean of its divisors is an integer number (90336400).

Almost surely, 2^1671540516 is an apocalyptic number.

It is an amenable number.

1671540516 is an abundant number, since it is smaller than the sum of its proper divisors (2664606684).

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

1671540516 is a wasteful number, since it uses less digits than its factorization.

1671540516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9025 (or 9017 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 1671540516 is about 40884.4776901944. The cubic root of 1671540516 is about 1186.7856942355.

The spelling of 1671540516 in words is "one billion, six hundred seventy-one million, five hundred forty thousand, five hundred sixteen".