3720191849 has 12 divisors (see below), whose sum is σ = 4273003440. Its totient is φ = 3203233560.

The previous prime is 3720191843. The next prime is 3720191873. The reversal of 3720191849 is 9481910273.

It is not a de Polignac number, because 3720191849 - 2⁸ = 3720191593 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3720191843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 879662 + ... + 883880.

It is an arithmetic number, because the mean of its divisors is an integer number (356083620).

Almost surely, 2^3720191849 is an apocalyptic number.

It is an amenable number.

3720191849 is a deficient number, since it is larger than the sum of its proper divisors (552811591).

3720191849 is an frugal number, since it uses more digits than its factorization.

3720191849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8468 (or 4249 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 3720191849 is about 60993.3754517653. The cubic root of 3720191849 is about 1549.4888149902.

The spelling of 3720191849 in words is "three billion, seven hundred twenty million, one hundred ninety-one thousand, eight hundred forty-nine".