2015988493 has 2 divisors, whose sum is σ = 2015988494. Its totient is φ = 2015988492.

The previous prime is 2015988473. The next prime is 2015988509. The reversal of 2015988493 is 3948895102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1901134404 + 114854089 = 43602^2 + 10717^2 .

It is a cyclic number.

It is not a de Polignac number, because 2015988493 - 2²⁵ = 1982434061 is a prime.

It is a super-3 number, since 3×2015988493³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2015988473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007994246 + 1007994247.

It is an arithmetic number, because the mean of its divisors is an integer number (1007994247).

Almost surely, 2^2015988493 is an apocalyptic number.

It is an amenable number.

2015988493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2015988493 is an equidigital number, since it uses as much as digits as its factorization.

2015988493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 2015988493 is about 44899.7605004748. The cubic root of 2015988493 is about 1263.2695160098.

The spelling of 2015988493 in words is "two billion, fifteen million, nine hundred eighty-eight thousand, four hundred ninety-three".