1939953634 has 8 divisors (see below), whose sum is σ = 2939930028. Its totient is φ = 959976960.

The previous prime is 1939953629. The next prime is 1939953727. The reversal of 1939953634 is 4363599391.

It can be written as a sum of positive squares in 2 ways, for example, as 1736805625 + 203148009 = 41675^2 + 14253^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4999687 + ... + 5000074.

Almost surely, 2^1939953634 is an apocalyptic number.

1939953634 is a deficient number, since it is larger than the sum of its proper divisors (999976394).

1939953634 is an equidigital number, since it uses as much as digits as its factorization.

1939953634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9999860.

The product of its digits is 2361960, while the sum is 52.

The square root of 1939953634 is about 44044.9047450440. The cubic root of 1939953634 is about 1247.1837684234.

The spelling of 1939953634 in words is "one billion, nine hundred thirty-nine million, nine hundred fifty-three thousand, six hundred thirty-four".