1642898241 has 48 divisors (see below), whose sum is σ = 2597662080. Its totient is φ = 1026005760.

The previous prime is 1642898237. The next prime is 1642898261. The reversal of 1642898241 is 1428982461.

It is not a de Polignac number, because 1642898241 - 2² = 1642898237 is a prime.

It is a super-2 number, since 2×1642898241² = 5398229260561788162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1642898261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2426395 + ... + 2427071.

It is an arithmetic number, because the mean of its divisors is an integer number (54117960).

Almost surely, 2^1642898241 is an apocalyptic number.

It is an amenable number.

1642898241 is a deficient number, since it is larger than the sum of its proper divisors (954763839).

1642898241 is a wasteful number, since it uses less digits than its factorization.

1642898241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1008 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 1642898241 is about 40532.6811474395. The cubic root of 1642898241 is about 1179.9679779206.

The spelling of 1642898241 in words is "one billion, six hundred forty-two million, eight hundred ninety-eight thousand, two hundred forty-one".