2749491000 has 128 divisors (see below), whose sum is σ = 9531662400. Its totient is φ = 733190400.

The previous prime is 2749490981. The next prime is 2749491013. The reversal of 2749491000 is 1949472.

It is a super-3 number, since 3×2749491000³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23917 + ... + 77916.

Almost surely, 2^2749491000 is an apocalyptic number.

2749491000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2749491000 is an abundant number, since it is smaller than the sum of its proper divisors (6782171400).

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

2749491000 is a wasteful number, since it uses less digits than its factorization.

2749491000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101863 (or 101843 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 2749491000 is about 52435.5890593402. The cubic root of 2749491000 is about 1400.9332213263.

The spelling of 2749491000 in words is "two billion, seven hundred forty-nine million, four hundred ninety-one thousand".