1642924089 has 27 divisors (see below), whose sum is σ = 2424604143. Its totient is φ = 1072016784.

The previous prime is 1642924039. The next prime is 1642924097. The reversal of 1642924089 is 9804292461.

The square root of 1642924089 is 40533.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1530139689 + 112784400 = 39117^2 + 10620^2 .

It is not a de Polignac number, because 1642924089 - 2¹⁷ = 1642793017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1642924009) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7174227 + ... + 7174455.

Almost surely, 2^1642924089 is an apocalyptic number.

1642924089 is the 40533-rd square number.

1642924089 is the 20267-th centered octagonal number.

It is an amenable number.

1642924089 is a deficient number, since it is larger than the sum of its proper divisors (781680054).

1642924089 is an frugal number, since it uses more digits than its factorization.

1642924089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The cubic root of 1642924089 is about 1179.9741661011.

The spelling of 1642924089 in words is "one billion, six hundred forty-two million, nine hundred twenty-four thousand, eighty-nine".