1949561 has 4 divisors (see below), whose sum is σ = 1962624. Its totient is φ = 1936500.

The previous prime is 1949557. The next prime is 1949573. The reversal of 1949561 is 1659491.

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.

It is a cyclic number.

It is not a de Polignac number, because 1949561 - 2² = 1949557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1949501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6305 + ... + 6606.

It is an arithmetic number, because the mean of its divisors is an integer number (490656).

2^1949561 is an apocalyptic number.

It is an amenable number.

1949561 is a deficient number, since it is larger than the sum of its proper divisors (13063).

1949561 is a wasteful number, since it uses less digits than its factorization.

1949561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13062.

The product of its digits is 9720, while the sum is 35.

The square root of 1949561 is about 1396.2668083142. The cubic root of 1949561 is about 124.9239217061.

The spelling of 1949561 in words is "one million, nine hundred forty-nine thousand, five hundred sixty-one".