1664124435 has 12 divisors (see below), whose sum is σ = 2884482432. Its totient is φ = 887533008.

The previous prime is 1664124421. The next prime is 1664124437. The reversal of 1664124435 is 5344214661.

1664124435 is a `hidden beast` number, since 1 + 6 + 641 + 2 + 4 + 4 + 3 + 5 = 666.

It is not a de Polignac number, because 1664124435 - 2⁴ = 1664124419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1664124435.

It is not an unprimeable number, because it can be changed into a prime (1664124437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18490227 + ... + 18490316.

It is an arithmetic number, because the mean of its divisors is an integer number (240373536).

Almost surely, 2^1664124435 is an apocalyptic number.

1664124435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1664124435 is a deficient number, since it is larger than the sum of its proper divisors (1220357997).

1664124435 is a wasteful number, since it uses less digits than its factorization.

1664124435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36980554 (or 36980551 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 1664124435 is about 40793.6813121836. The cubic root of 1664124435 is about 1185.0279649438.

The spelling of 1664124435 in words is "one billion, six hundred sixty-four million, one hundred twenty-four thousand, four hundred thirty-five".