1620650102 has 4 divisors (see below), whose sum is σ = 2430975156. Its totient is φ = 810325050.

The previous prime is 1620650077. The next prime is 1620650107. The reversal of 1620650102 is 2010560261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2010560261 = 167 ⋅12039283.

It is a super-2 number, since 2×1620650102² = 5253013506225220808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620650107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405162524 + ... + 405162527.

It is an arithmetic number, because the mean of its divisors is an integer number (607743789).

Almost surely, 2^1620650102 is an apocalyptic number.

1620650102 is a deficient number, since it is larger than the sum of its proper divisors (810325054).

1620650102 is an equidigital number, since it uses as much as digits as its factorization.

1620650102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810325053.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1620650102 is about 40257.2987419673. The cubic root of 1620650102 is about 1174.6173740122.

The spelling of 1620650102 in words is "one billion, six hundred twenty million, six hundred fifty thousand, one hundred two".