1980695015 has 8 divisors (see below), whose sum is σ = 2559667488. Its totient is φ = 1462667040.

The previous prime is 1980695011. The next prime is 1980695051. The reversal of 1980695015 is 5105960891.

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

It is not a de Polignac number, because 1980695015 - 2² = 1980695011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980695011) 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, 15236051 + ... + 15236180.

It is an arithmetic number, because the mean of its divisors is an integer number (319958436).

Almost surely, 2^1980695015 is an apocalyptic number.

1980695015 is a deficient number, since it is larger than the sum of its proper divisors (578972473).

1980695015 is a wasteful number, since it uses less digits than its factorization.

1980695015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30472249.

The product of its (nonzero) digits is 97200, while the sum is 44.

The square root of 1980695015 is about 44504.9998876531. Note that the first 3 decimals coincide. The cubic root of 1980695015 is about 1255.8541436017.

The spelling of 1980695015 in words is "one billion, nine hundred eighty million, six hundred ninety-five thousand, fifteen".