1898157827828 has 12 divisors (see below), whose sum is σ = 3326816834880. Its totient is φ = 947638732152.

The previous prime is 1898157827809. The next prime is 1898157827837. The reversal of 1898157827828 is 8287287518981.

It is a super-2 number, since 2×1898157827828² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360042476 + ... + 360047747.

It is an arithmetic number, because the mean of its divisors is an integer number (277234736240).

Almost surely, 2^{1898157827828} is an apocalyptic number.

It is an amenable number.

1898157827828 is a deficient number, since it is larger than the sum of its proper divisors (1428659007052).

1898157827828 is a wasteful number, since it uses less digits than its factorization.

1898157827828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720090886 (or 720090884 counting only the distinct ones).

The product of its digits is 289013760, while the sum is 74.

The spelling of 1898157827828 in words is "one trillion, eight hundred ninety-eight billion, one hundred fifty-seven million, eight hundred twenty-seven thousand, eight hundred twenty-eight".