1642396900539 has 16 divisors (see below), whose sum is σ = 2291621472000. Its totient is φ = 1044324611616.

The previous prime is 1642396900537. The next prime is 1642396900553. The reversal of 1642396900539 is 9350096932461.

It is a happy number.

It is not a de Polignac number, because 1642396900539 - 2¹ = 1642396900537 is a prime.

It is a super-2 number, since 2×1642396900539² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1642396900531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34077429 + ... + 34125590.

It is an arithmetic number, because the mean of its divisors is an integer number (143226342000).

Almost surely, 2^{1642396900539} is an apocalyptic number.

1642396900539 is a deficient number, since it is larger than the sum of its proper divisors (649224571461).

1642396900539 is a wasteful number, since it uses less digits than its factorization.

1642396900539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68203394.

The product of its (nonzero) digits is 9447840, while the sum is 57.

The spelling of 1642396900539 in words is "one trillion, six hundred forty-two billion, three hundred ninety-six million, nine hundred thousand, five hundred thirty-nine".