3774213891 has 24 divisors (see below), whose sum is σ = 6233959680. Its totient is φ = 2155478256.

The previous prime is 3774213887. The next prime is 3774213923. The reversal of 3774213891 is 1983124773.

It is not a de Polignac number, because 3774213891 - 2² = 3774213887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3774213841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102436 + ... + 134318.

It is an arithmetic number, because the mean of its divisors is an integer number (259748320).

Almost surely, 2^3774213891 is an apocalyptic number.

3774213891 is a deficient number, since it is larger than the sum of its proper divisors (2459745789).

3774213891 is a wasteful number, since it uses less digits than its factorization.

3774213891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33775 (or 33772 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 3774213891 is about 61434.6310398296. The cubic root of 3774213891 is about 1556.9530009338.

The spelling of 3774213891 in words is "three billion, seven hundred seventy-four million, two hundred thirteen thousand, eight hundred ninety-one".