5181949 has 8 divisors (see below), whose sum is σ = 5342400. Its totient is φ = 5023200.

The previous prime is 5181947. The next prime is 5181971. The reversal of 5181949 is 9491815.

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

It is a cyclic number.

It is not a de Polignac number, because 5181949 - 2¹ = 5181947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181941) 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, 8352 + ... + 8950.

It is an arithmetic number, because the mean of its divisors is an integer number (667800).

Almost surely, 2^5181949 is an apocalyptic number.

It is an amenable number.

5181949 is a deficient number, since it is larger than the sum of its proper divisors (160451).

5181949 is a wasteful number, since it uses less digits than its factorization.

5181949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its digits is 12960, while the sum is 37.

The square root of 5181949 is about 2276.3894657989. The cubic root of 5181949 is about 173.0471209364.

It can be divided in two parts, 51819 and 49, that multiplied together give a triangular number (2539131 = T₂₂₅₃).

The spelling of 5181949 in words is "five million, one hundred eighty-one thousand, nine hundred forty-nine".