1128815901460 has 48 divisors (see below), whose sum is σ = 2703028856976. Its totient is φ = 392276293632.

The previous prime is 1128815901391. The next prime is 1128815901461. The reversal of 1128815901460 is 641095188211.

It can be written as a sum of positive squares in 8 ways, for example, as 4969968004 + 1123845933456 = 70498^2 + 1060116^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1128815901460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128815901461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127689687 + ... + 127698526.

It is an arithmetic number, because the mean of its divisors is an integer number (56313101187).

Almost surely, 2^{1128815901460} is an apocalyptic number.

1128815901460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128815901460 is an abundant number, since it is smaller than the sum of its proper divisors (1574212955516).

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

1128815901460 is a wasteful number, since it uses less digits than its factorization.

1128815901460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255388252 (or 255388250 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 46.

The spelling of 1128815901460 in words is "one trillion, one hundred twenty-eight billion, eight hundred fifteen million, nine hundred one thousand, four hundred sixty".