1009435681860 has 48 divisors (see below), whose sum is σ = 2826485456256. Its totient is φ = 269176605952.

The previous prime is 1009435681841. The next prime is 1009435681873. The reversal of 1009435681860 is 681865349001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2791624 + ... + 3132416.

It is an arithmetic number, because the mean of its divisors is an integer number (58885113672).

Almost surely, 2^{1009435681860} is an apocalyptic number.

1009435681860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1009435681860 is an abundant number, since it is smaller than the sum of its proper divisors (1817049774396).

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

1009435681860 is a wasteful number, since it uses less digits than its factorization.

1009435681860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390172 (or 390170 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 1009435681860 in words is "one trillion, nine billion, four hundred thirty-five million, six hundred eighty-one thousand, eight hundred sixty".