2891892989466 has 160 divisors (see below), whose sum is σ = 7034547820608. Its totient is φ = 882680198400.

The previous prime is 2891892989459. The next prime is 2891892989471. The reversal of 2891892989466 is 6649892981982.

2891892989466 is a `hidden beast` number, since 2 + 8 + 9 + 189 + 298 + 94 + 66 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 187765366 + ... + 187780766.

Almost surely, 2^{2891892989466} is an apocalyptic number.

2891892989466 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2891892989466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3517273910304).

2891892989466 is an abundant number, since it is smaller than the sum of its proper divisors (4142654831142).

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

2891892989466 is a wasteful number, since it uses less digits than its factorization.

2891892989466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16138 (or 16129 counting only the distinct ones).

The product of its digits is 1934917632, while the sum is 81.

The spelling of 2891892989466 in words is "two trillion, eight hundred ninety-one billion, eight hundred ninety-two million, nine hundred eighty-nine thousand, four hundred sixty-six".