1623947164 has 12 divisors (see below), whose sum is σ = 3247894384. Its totient is φ = 695977344.

The previous prime is 1623947153. The next prime is 1623947197. The reversal of 1623947164 is 4617493261.

1623947164 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1623947164.

It is a congruent number.

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, 28999029 + ... + 28999084.

Almost surely, 2^1623947164 is an apocalyptic number.

1623947164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1623947164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1623947164 is a wasteful number, since it uses less digits than its factorization.

1623947164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57998124 (or 57998122 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 1623947164 is about 40298.2278022248. The cubic root of 1623947164 is about 1175.4133844102.

The spelling of 1623947164 in words is "one billion, six hundred twenty-three million, nine hundred forty-seven thousand, one hundred sixty-four".