1642122513 has 24 divisors (see below), whose sum is σ = 2477442240. Its totient is φ = 1046152800.

The previous prime is 1642122491. The next prime is 1642122527. The reversal of 1642122513 is 3152212461.

1642122513 is a `hidden beast` number, since 1 + 6 + 421 + 225 + 13 = 666.

It is not a de Polignac number, because 1642122513 - 2¹⁰ = 1642121489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1642122413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257463 + ... + 263763.

It is an arithmetic number, because the mean of its divisors is an integer number (103226760).

Almost surely, 2^1642122513 is an apocalyptic number.

It is an amenable number.

1642122513 is a deficient number, since it is larger than the sum of its proper divisors (835319727).

1642122513 is a wasteful number, since it uses less digits than its factorization.

1642122513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7589 (or 7586 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1642122513 is about 40523.1108504764. The cubic root of 1642122513 is about 1179.7822333466.

Adding to 1642122513 its reverse (3152212461), we get a palindrome (4794334974).

The spelling of 1642122513 in words is "one billion, six hundred forty-two million, one hundred twenty-two thousand, five hundred thirteen".