10185905940 has 48 divisors (see below), whose sum is σ = 32594900352. Its totient is φ = 2328206976.

The previous prime is 10185905921. The next prime is 10185905953. The reversal of 10185905940 is 4950958101.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 10185905892 and 10185905901.

It is a congruent number.

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, 12125659 + ... + 12126498.

It is an arithmetic number, because the mean of its divisors is an integer number (679060424).

Almost surely, 2^10185905940 is an apocalyptic number.

10185905940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10185905940 is an abundant number, since it is smaller than the sum of its proper divisors (22408994412).

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

10185905940 is a wasteful number, since it uses less digits than its factorization.

10185905940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24252176 (or 24252174 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 42.

The spelling of 10185905940 in words is "ten billion, one hundred eighty-five million, nine hundred five thousand, nine hundred forty".