1628436601 has 4 divisors (see below), whose sum is σ = 1776476304. Its totient is φ = 1480396900.

The previous prime is 1628436581. The next prime is 1628436611. The reversal of 1628436601 is 1066348261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1628436601 - 2⁷ = 1628436473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1628436611) by changing a digit.

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, 74019835 + ... + 74019856.

It is an arithmetic number, because the mean of its divisors is an integer number (444119076).

Almost surely, 2^1628436601 is an apocalyptic number.

1628436601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1628436601 is a deficient number, since it is larger than the sum of its proper divisors (148039703).

1628436601 is a wasteful number, since it uses less digits than its factorization.

1628436601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148039702.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 1628436601 is about 40353.8920179950. The cubic root of 1628436601 is about 1176.4955397018.

The spelling of 1628436601 in words is "one billion, six hundred twenty-eight million, four hundred thirty-six thousand, six hundred one".