2748991401 has 12 divisors (see below), whose sum is σ = 4276209028. Its totient is φ = 1691686944.

The previous prime is 2748991397. The next prime is 2748991451. The reversal of 2748991401 is 1041998472.

It is a happy number.

2748991401 is a `hidden beast` number, since 27 + 489 + 9 + 140 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1070860176 + 1678131225 = 32724^2 + 40965^2 .

It is not a de Polignac number, because 2748991401 - 2² = 2748991397 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2748991451) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11747710 + ... + 11747943.

Almost surely, 2^2748991401 is an apocalyptic number.

It is an amenable number.

2748991401 is a deficient number, since it is larger than the sum of its proper divisors (1527217627).

2748991401 is a wasteful number, since it uses less digits than its factorization.

2748991401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23495672 (or 23495669 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 2748991401 is about 52430.8249124501. The cubic root of 2748991401 is about 1400.8483635310.

The spelling of 2748991401 in words is "two billion, seven hundred forty-eight million, nine hundred ninety-one thousand, four hundred one".