1897945068 has 48 divisors (see below), whose sum is σ = 4481380064. Its totient is φ = 625121280.

The previous prime is 1897945067. The next prime is 1897945079. The reversal of 1897945068 is 8605497981.

It is a super-2 number, since 2×1897945068² = 7204390962291049248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1897944999 and 1897945017.

It is not an unprimeable number, because it can be changed into a prime (1897945067) 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, 1187646 + ... + 1189242.

Almost surely, 2^1897945068 is an apocalyptic number.

It is an amenable number.

1897945068 is an abundant number, since it is smaller than the sum of its proper divisors (2583434996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1897945068 is a wasteful number, since it uses less digits than its factorization.

1897945068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722 (or 2720 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 57.

The square root of 1897945068 is about 43565.4113718670. The cubic root of 1897945068 is about 1238.1156490189.

The spelling of 1897945068 in words is "one billion, eight hundred ninety-seven million, nine hundred forty-five thousand, sixty-eight".