3781295949 has 4 divisors (see below), whose sum is σ = 5041727936. Its totient is φ = 2520863964.

The previous prime is 3781295939. The next prime is 3781295953. The reversal of 3781295949 is 9495921873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9495921873 = 3 ⋅3165307291.

It is not a de Polignac number, because 3781295949 - 2⁹ = 3781295437 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 (3781295909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 630215989 + ... + 630215994.

It is an arithmetic number, because the mean of its divisors is an integer number (1260431984).

Almost surely, 2^3781295949 is an apocalyptic number.

It is an amenable number.

3781295949 is a deficient number, since it is larger than the sum of its proper divisors (1260431987).

3781295949 is a wasteful number, since it uses less digits than its factorization.

3781295949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260431986.

The product of its digits is 4898880, while the sum is 57.

The square root of 3781295949 is about 61492.2429986092. The cubic root of 3781295949 is about 1557.9262315782.

The spelling of 3781295949 in words is "three billion, seven hundred eighty-one million, two hundred ninety-five thousand, nine hundred forty-nine".