1973903616 has 216 divisors, whose sum is σ = 6089239520. Its totient is φ = 613122048.

The previous prime is 1973903611. The next prime is 1973903621. The reversal of 1973903616 is 6163093791.

It is an interprime number because it is at equal distance from previous prime (1973903611) and next prime (1973903621).

It is not an unprimeable number, because it can be changed into a prime (1973903611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2932656 + ... + 2933328.

Almost surely, 2^1973903616 is an apocalyptic number.

1973903616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1973903616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3044619760).

1973903616 is an abundant number, since it is smaller than the sum of its proper divisors (4115335904).

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

1973903616 is a wasteful number, since it uses less digits than its factorization.

1973903616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781 (or 764 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 1973903616 is about 44428.6350904459. The cubic root of 1973903616 is about 1254.4171440979.

The spelling of 1973903616 in words is "one billion, nine hundred seventy-three million, nine hundred three thousand, six hundred sixteen".