1642868097 has 12 divisors (see below), whose sum is σ = 2371952304. Its totient is φ = 1010995440.

The previous prime is 1642868093. The next prime is 1642868099. The reversal of 1642868097 is 7908682461.

It is not a de Polignac number, because 1642868097 - 2² = 1642868093 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1642868093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1619679 + ... + 1620692.

It is an arithmetic number, because the mean of its divisors is an integer number (197662692).

Almost surely, 2^1642868097 is an apocalyptic number.

It is an amenable number.

1642868097 is a deficient number, since it is larger than the sum of its proper divisors (729084207).

1642868097 is a wasteful number, since it uses less digits than its factorization.

1642868097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240400 (or 3240387 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 1642868097 is about 40532.3092976455. The cubic root of 1642868097 is about 1179.9607611677.

The spelling of 1642868097 in words is "one billion, six hundred forty-two million, eight hundred sixty-eight thousand, ninety-seven".