1639427050 has 24 divisors (see below), whose sum is σ = 3051765612. Its totient is φ = 655248000.

The previous prime is 1639427047. The next prime is 1639427129. The reversal of 1639427050 is 507249361.

It can be written as a sum of positive squares in 6 ways, for example, as 665175681 + 974251369 = 25791^2 + 31213^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53640 + ... + 78460.

Almost surely, 2^1639427050 is an apocalyptic number.

1639427050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1639427050 is a deficient number, since it is larger than the sum of its proper divisors (1412338562).

1639427050 is a wasteful number, since it uses less digits than its factorization.

1639427050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26154 (or 26149 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 1639427050 is about 40489.8388487778. The cubic root of 1639427050 is about 1179.1363617401.

The spelling of 1639427050 in words is "one billion, six hundred thirty-nine million, four hundred twenty-seven thousand, fifty".