2891939814 has 32 divisors (see below), whose sum is σ = 6431050080. Its totient is φ = 963302400.

The previous prime is 2891939801. The next prime is 2891939833. The reversal of 2891939814 is 4189391982.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61894 + ... + 98054.

It is an arithmetic number, because the mean of its divisors is an integer number (200970315).

Almost surely, 2^2891939814 is an apocalyptic number.

2891939814 is an abundant number, since it is smaller than the sum of its proper divisors (3539110266).

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

2891939814 is a wasteful number, since it uses less digits than its factorization.

2891939814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37653 (or 37647 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 2891939814 is about 53776.7590507275. The cubic root of 2891939814 is about 1424.7207519293.

The spelling of 2891939814 in words is "two billion, eight hundred ninety-one million, nine hundred thirty-nine thousand, eight hundred fourteen".