1672216515 has 32 divisors (see below), whose sum is σ = 3028933440. Its totient is φ = 875017728.

The previous prime is 1672216459. The next prime is 1672216519. The reversal of 1672216515 is 5156122761.

It is not a de Polignac number, because 1672216515 - 2⁶ = 1672216451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1672216515.

It is not an unprimeable number, because it can be changed into a prime (1672216519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109702 + ... + 124011.

It is an arithmetic number, because the mean of its divisors is an integer number (94654170).

Almost surely, 2^1672216515 is an apocalyptic number.

1672216515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1672216515 is a deficient number, since it is larger than the sum of its proper divisors (1356716925).

1672216515 is a wasteful number, since it uses less digits than its factorization.

1672216515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233780 (or 233774 counting only the distinct ones).

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

The square root of 1672216515 is about 40892.7440385211. The cubic root of 1672216515 is about 1186.9456580153.

The spelling of 1672216515 in words is "one billion, six hundred seventy-two million, two hundred sixteen thousand, five hundred fifteen".