1903946864 has 10 divisors (see below), whose sum is σ = 3688897080. Its totient is φ = 951973424.

The previous prime is 1903946861. The next prime is 1903946881. The reversal of 1903946864 is 4686493091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1903946861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59498324 + ... + 59498355.

It is an arithmetic number, because the mean of its divisors is an integer number (368889708).

Almost surely, 2^1903946864 is an apocalyptic number.

It is an amenable number.

1903946864 is a deficient number, since it is larger than the sum of its proper divisors (1784950216).

1903946864 is a wasteful number, since it uses less digits than its factorization.

1903946864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118996687 (or 118996681 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 1903946864 is about 43634.2395831530. The cubic root of 1903946864 is about 1239.4193570091.

The spelling of 1903946864 in words is "one billion, nine hundred three million, nine hundred forty-six thousand, eight hundred sixty-four".