1671995898 has 32 divisors (see below), whose sum is σ = 3767886720. Its totient is φ = 549480960.

The previous prime is 1671995893. The next prime is 1671995911. The reversal of 1671995898 is 8985991761.

It is not an unprimeable number, because it can be changed into a prime (1671995891) 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, 214215 + ... + 221882.

It is an arithmetic number, because the mean of its divisors is an integer number (117746460).

Almost surely, 2^1671995898 is an apocalyptic number.

1671995898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1671995898 is an abundant number, since it is smaller than the sum of its proper divisors (2095890822).

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

1671995898 is a wasteful number, since it uses less digits than its factorization.

1671995898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436179 (or 436173 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 63.

The square root of 1671995898 is about 40890.0464416464. The cubic root of 1671995898 is about 1186.8934574570.

The spelling of 1671995898 in words is "one billion, six hundred seventy-one million, nine hundred ninety-five thousand, eight hundred ninety-eight".