2891269390 has 64 divisors (see below), whose sum is σ = 5705904384. Its totient is φ = 1050513408.

The previous prime is 2891269369. The next prime is 2891269411. The reversal of 2891269390 is 939621982.

It is an interprime number because it is at equal distance from previous prime (2891269369) and next prime (2891269411).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 580792 + ... + 585748.

It is an arithmetic number, because the mean of its divisors is an integer number (89154756).

Almost surely, 2^2891269390 is an apocalyptic number.

2891269390 is a deficient number, since it is larger than the sum of its proper divisors (2814634994).

2891269390 is a wasteful number, since it uses less digits than its factorization.

2891269390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 2891269390 is about 53770.5252903484. The cubic root of 2891269390 is about 1424.6106481159.

The spelling of 2891269390 in words is "two billion, eight hundred ninety-one million, two hundred sixty-nine thousand, three hundred ninety".