2748629381 has 8 divisors (see below), whose sum is σ = 2821959000. Its totient is φ = 2675599360.

The previous prime is 2748629371. The next prime is 2748629399. The reversal of 2748629381 is 1839268472.

It can be written as a sum of positive squares in 4 ways, for example, as 29528356 + 2719101025 = 5434^2 + 52145^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2748629381 is a prime.

It is a super-2 number, since 2×2748629381² = 15109926948192886322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2748629311) 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, 56246 + ... + 93063.

It is an arithmetic number, because the mean of its divisors is an integer number (352744875).

Almost surely, 2^2748629381 is an apocalyptic number.

It is an amenable number.

2748629381 is a deficient number, since it is larger than the sum of its proper divisors (73329619).

2748629381 is a wasteful number, since it uses less digits than its factorization.

2748629381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149799.

The product of its digits is 1161216, while the sum is 50.

The square root of 2748629381 is about 52427.3724403579. The cubic root of 2748629381 is about 1400.7868673537.

The spelling of 2748629381 in words is "two billion, seven hundred forty-eight million, six hundred twenty-nine thousand, three hundred eighty-one".