2691487344 has 160 divisors (see below), whose sum is σ = 8579450880. Its totient is φ = 708028416.

The previous prime is 2691487343. The next prime is 2691487349. The reversal of 2691487344 is 4437841962.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 2691487293 and 2691487302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2691487343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3140164 + ... + 3141020.

It is an arithmetic number, because the mean of its divisors is an integer number (53621568).

Almost surely, 2^2691487344 is an apocalyptic number.

2691487344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2691487344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4289725440).

2691487344 is an abundant number, since it is smaller than the sum of its proper divisors (5887963536).

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

2691487344 is a wasteful number, since it uses less digits than its factorization.

2691487344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607 (or 1601 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The square root of 2691487344 is about 51879.5464899222. The cubic root of 2691487344 is about 1391.0116927827.

The spelling of 2691487344 in words is "two billion, six hundred ninety-one million, four hundred eighty-seven thousand, three hundred forty-four".