1013191128 has 48 divisors (see below), whose sum is σ = 2818230480. Its totient is φ = 328601664.

The previous prime is 1013191117. The next prime is 1013191133. The reversal of 1013191128 is 8211913101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187500 + ... + 192827.

It is an arithmetic number, because the mean of its divisors is an integer number (58713135).

Almost surely, 2^1013191128 is an apocalyptic number.

1013191128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1013191128 is an abundant number, since it is smaller than the sum of its proper divisors (1805039352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1013191128 is a wasteful number, since it uses less digits than its factorization.

1013191128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380376 (or 380369 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 27.

The square root of 1013191128 is about 31830.6633295632. The cubic root of 1013191128 is about 1004.3778491356.

The spelling of 1013191128 in words is "one billion, thirteen million, one hundred ninety-one thousand, one hundred twenty-eight".