2691355789 has 8 divisors (see below), whose sum is σ = 2712469760. Its totient is φ = 2670310800.

The previous prime is 2691355727. The next prime is 2691355813. The reversal of 2691355789 is 9875531962.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2691355789 - 2¹⁹ = 2690831501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2691350789) 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, 62524 + ... + 96394.

It is an arithmetic number, because the mean of its divisors is an integer number (339058720).

Almost surely, 2^2691355789 is an apocalyptic number.

It is an amenable number.

2691355789 is a deficient number, since it is larger than the sum of its proper divisors (21113971).

2691355789 is a wasteful number, since it uses less digits than its factorization.

2691355789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34491.

The product of its digits is 4082400, while the sum is 55.

The square root of 2691355789 is about 51878.2785855506. The cubic root of 2691355789 is about 1390.9890290407.

The spelling of 2691355789 in words is "two billion, six hundred ninety-one million, three hundred fifty-five thousand, seven hundred eighty-nine".