1903952640 has 72 divisors (see below), whose sum is σ = 6080761008. Its totient is φ = 507719680.

The previous prime is 1903952593. The next prime is 1903952641. The reversal of 1903952640 is 462593091.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1903952641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244071 + ... + 251750.

It is an arithmetic number, because the mean of its divisors is an integer number (84455014).

Almost surely, 2^1903952640 is an apocalyptic number.

1903952640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1903952640 is an abundant number, since it is smaller than the sum of its proper divisors (4176808368).

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

1903952640 is an equidigital number, since it uses as much as digits as its factorization.

1903952640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495845 (or 495831 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 1903952640 is about 43634.3057696579. The cubic root of 1903952640 is about 1239.4206103492.

The spelling of 1903952640 in words is "one billion, nine hundred three million, nine hundred fifty-two thousand, six hundred forty".