1628383761 has 24 divisors (see below), whose sum is σ = 2404706304. Its totient is φ = 1061363520.

The previous prime is 1628383721. The next prime is 1628383789. The reversal of 1628383761 is 1673838261.

It is not a de Polignac number, because 1628383761 - 2¹⁰ = 1628382737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1628383721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 620925 + ... + 623541.

It is an arithmetic number, because the mean of its divisors is an integer number (100196096).

Almost surely, 2^1628383761 is an apocalyptic number.

It is an amenable number.

1628383761 is a deficient number, since it is larger than the sum of its proper divisors (776322543).

1628383761 is a wasteful number, since it uses less digits than its factorization.

1628383761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141 (or 4138 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 1628383761 is about 40353.2373050788. The cubic root of 1628383761 is about 1176.4828144706.

The spelling of 1628383761 in words is "one billion, six hundred twenty-eight million, three hundred eighty-three thousand, seven hundred sixty-one".