1949771 has 2 divisors, whose sum is σ = 1949772. Its totient is φ = 1949770.

The previous prime is 1949741. The next prime is 1949777. The reversal of 1949771 is 1779491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1949771 - 2⁶ = 1949707 is a prime.

It is not a weakly prime, because it can be changed into another prime (1949777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974885 + 974886.

It is an arithmetic number, because the mean of its divisors is an integer number (974886).

2^1949771 is an apocalyptic number.

1949771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1949771 is an equidigital number, since it uses as much as digits as its factorization.

1949771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 38.

The square root of 1949771 is about 1396.3420068164. The cubic root of 1949771 is about 124.9284070034.

The spelling of 1949771 in words is "one million, nine hundred forty-nine thousand, seven hundred seventy-one".