2745018381 has 8 divisors (see below), whose sum is σ = 4182885184. Its totient is φ = 1568581920.

The previous prime is 2745018337. The next prime is 2745018427. The reversal of 2745018381 is 1838105472.

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

It is not a de Polignac number, because 2745018381 - 2⁶ = 2745018317 is a prime.

It is a super-2 number, since 2×2745018381² = 15070251824055722322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745018181) 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, 65357560 + ... + 65357601.

It is an arithmetic number, because the mean of its divisors is an integer number (522860648).

Almost surely, 2^2745018381 is an apocalyptic number.

2745018381 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2745018381 is a deficient number, since it is larger than the sum of its proper divisors (1437866803).

2745018381 is a wasteful number, since it uses less digits than its factorization.

2745018381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130715171.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 2745018381 is about 52392.9230049250. The cubic root of 2745018381 is about 1400.1731726262.

The spelling of 2745018381 in words is "two billion, seven hundred forty-five million, eighteen thousand, three hundred eighty-one".