1620626050 has 24 divisors (see below), whose sum is σ = 3071244276. Its totient is φ = 636018240.

The previous prime is 1620626041. The next prime is 1620626057. The reversal of 1620626050 is 506260261.

It is a Cunningham number, because it is equal to 40257²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 721405881 + 899220169 = 26859^2 + 29987^2 .

It is not an unprimeable number, because it can be changed into a prime (1620626057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 303129 + ... + 308428.

Almost surely, 2^1620626050 is an apocalyptic number.

1620626050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1620626050 is a deficient number, since it is larger than the sum of its proper divisors (1450618226).

1620626050 is a wasteful number, since it uses less digits than its factorization.

1620626050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611622 (or 611617 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1620626050 is about 40257.0000124202. Note that the first 4 decimals coincide. The cubic root of 1620626050 is about 1174.6115631678.

The spelling of 1620626050 in words is "one billion, six hundred twenty million, six hundred twenty-six thousand, fifty".