1983964733 has 8 divisors (see below), whose sum is σ = 2056001400. Its totient is φ = 1912169728.

The previous prime is 1983964729. The next prime is 1983964757. The reversal of 1983964733 is 3374693891.

It can be written as a sum of positive squares in 4 ways, for example, as 3892729 + 1980072004 = 1973^2 + 44498^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1983964733 - 2² = 1983964729 is a prime.

It is a super-2 number, since 2×1983964733² = 7872232123575522578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1983964033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43616 + ... + 76617.

It is an arithmetic number, because the mean of its divisors is an integer number (257000175).

Almost surely, 2^1983964733 is an apocalyptic number.

It is an amenable number.

1983964733 is a deficient number, since it is larger than the sum of its proper divisors (72036667).

1983964733 is a wasteful number, since it uses less digits than its factorization.

1983964733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120831.

The product of its digits is 2939328, while the sum is 53.

The square root of 1983964733 is about 44541.7190171192. The cubic root of 1983964733 is about 1256.5448155447.

The spelling of 1983964733 in words is "one billion, nine hundred eighty-three million, nine hundred sixty-four thousand, seven hundred thirty-three".