1963981052 has 12 divisors (see below), whose sum is σ = 3749418456. Its totient is φ = 892718640.

The previous prime is 1963981039. The next prime is 1963981087. The reversal of 1963981052 is 2501893691.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 44635933 = 1963981052 / (1 + 9 + 6 + 3 + 9 + 8 + 1 + 0 + 5 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1963980994 and 1963981012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22317923 + ... + 22318010.

It is an arithmetic number, because the mean of its divisors is an integer number (312451538).

Almost surely, 2^1963981052 is an apocalyptic number.

It is an amenable number.

1963981052 is a deficient number, since it is larger than the sum of its proper divisors (1785437404).

1963981052 is a wasteful number, since it uses less digits than its factorization.

1963981052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44635948 (or 44635946 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1963981052 is about 44316.8258339877. The cubic root of 1963981052 is about 1252.3116800330.

The spelling of 1963981052 in words is "one billion, nine hundred sixty-three million, nine hundred eighty-one thousand, fifty-two".