1897013892 has 24 divisors (see below), whose sum is σ = 4428788896. Its totient is φ = 631991808.

The previous prime is 1897013779. The next prime is 1897013893. The reversal of 1897013892 is 2983107981.

It is not an unprimeable number, because it can be changed into a prime (1897013893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19933 + ... + 64740.

Almost surely, 2^1897013892 is an apocalyptic number.

1897013892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1897013892 is an abundant number, since it is smaller than the sum of its proper divisors (2531775004).

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

1897013892 is a wasteful number, since it uses less digits than its factorization.

1897013892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86547 (or 86545 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 1897013892 is about 43554.7229585954. The cubic root of 1897013892 is about 1237.9131331162.

The spelling of 1897013892 in words is "one billion, eight hundred ninety-seven million, thirteen thousand, eight hundred ninety-two".