1963039634 has 12 divisors (see below), whose sum is σ = 2975851242. Its totient is φ = 971095680.

The previous prime is 1963039613. The next prime is 1963039649. The reversal of 1963039634 is 4369303691.

It can be written as a sum of positive squares in 3 ways, for example, as 707400409 + 1255639225 = 26597^2 + 35435^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 615524 + ... + 618704.

Almost surely, 2^1963039634 is an apocalyptic number.

1963039634 is a deficient number, since it is larger than the sum of its proper divisors (1012811608).

1963039634 is an frugal number, since it uses more digits than its factorization.

1963039634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6461 (or 3280 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 44.

The square root of 1963039634 is about 44306.2031097227. The cubic root of 1963039634 is about 1252.1115529867. Note that the first 3 decimals are identical.

The spelling of 1963039634 in words is "one billion, nine hundred sixty-three million, thirty-nine thousand, six hundred thirty-four".