1623251606 has 4 divisors (see below), whose sum is σ = 2434877412. Its totient is φ = 811625802.

The previous prime is 1623251599. The next prime is 1623251627. The reversal of 1623251606 is 6061523261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6061523261 = 37 ⋅163824953.

It is a congruent number.

It is an unprimeable number.

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, 405812900 + ... + 405812903.

It is an arithmetic number, because the mean of its divisors is an integer number (608719353).

Almost surely, 2^1623251606 is an apocalyptic number.

1623251606 is a deficient number, since it is larger than the sum of its proper divisors (811625806).

1623251606 is an equidigital number, since it uses as much as digits as its factorization.

1623251606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811625805.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1623251606 is about 40289.5967465548. The cubic root of 1623251606 is about 1175.2455454242.

Adding to 1623251606 its reverse (6061523261), we get a palindrome (7684774867).

The spelling of 1623251606 in words is "one billion, six hundred twenty-three million, two hundred fifty-one thousand, six hundred six".