1015428491 has 12 divisors (see below), whose sum is σ = 1275580656. Its totient is φ = 791242320.

The previous prime is 1015428473. The next prime is 1015428497. The reversal of 1015428491 is 1948245101.

1015428491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1015428491 - 2¹⁰ = 1015427467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1015428497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 598580 + ... + 600273.

It is an arithmetic number, because the mean of its divisors is an integer number (106298388).

Almost surely, 2^1015428491 is an apocalyptic number.

1015428491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1015428491 is a deficient number, since it is larger than the sum of its proper divisors (260152165).

1015428491 is a wasteful number, since it uses less digits than its factorization.

1015428491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198882 (or 1198871 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1015428491 is about 31865.7887239591. The cubic root of 1015428491 is about 1005.1166060258.

The spelling of 1015428491 in words is "one billion, fifteen million, four hundred twenty-eight thousand, four hundred ninety-one".