1015988397 has 8 divisors (see below), whose sum is σ = 1355086944. Its totient is φ = 677107728.

The previous prime is 1015988383. The next prime is 1015988399. The reversal of 1015988397 is 7938895101.

1015988397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1015988397 - 2⁴ = 1015988381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015988399) 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, 43258 + ... + 62475.

It is an arithmetic number, because the mean of its divisors is an integer number (169385868).

Almost surely, 2^1015988397 is an apocalyptic number.

It is an amenable number.

1015988397 is a deficient number, since it is larger than the sum of its proper divisors (339098547).

1015988397 is a wasteful number, since it uses less digits than its factorization.

1015988397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108939.

The product of its (nonzero) digits is 544320, while the sum is 51.

The square root of 1015988397 is about 31874.5728912561. The cubic root of 1015988397 is about 1005.3013120942.

The spelling of 1015988397 in words is "one billion, fifteen million, nine hundred eighty-eight thousand, three hundred ninety-seven".