1671220515 has 8 divisors (see below), whose sum is σ = 2673952848. Its totient is φ = 891317600.

The previous prime is 1671220493. The next prime is 1671220519. The reversal of 1671220515 is 5150221761.

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

It is not a de Polignac number, because 1671220515 - 2⁵ = 1671220483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1671220519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55707336 + ... + 55707365.

It is an arithmetic number, because the mean of its divisors is an integer number (334244106).

Almost surely, 2^1671220515 is an apocalyptic number.

1671220515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1671220515 is a deficient number, since it is larger than the sum of its proper divisors (1002732333).

1671220515 is a wasteful number, since it uses less digits than its factorization.

1671220515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111414709.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 1671220515 is about 40880.5640249740. The cubic root of 1671220515 is about 1186.7099563473.

The spelling of 1671220515 in words is "one billion, six hundred seventy-one million, two hundred twenty thousand, five hundred fifteen".