1955649 has 8 divisors (see below), whose sum is σ = 2621952. Its totient is φ = 1296560.

The previous prime is 1955641. The next prime is 1955671. The reversal of 1955649 is 9465591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1955649 - 2³ = 1955641 is a prime.

It is a super-2 number, since 2×1955649² = 7649126022402, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 9³ + 5 + 5⁹ + 6² + 4⁵ + 9³ .

It is not an unprimeable number, because it can be changed into a prime (1955641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1134 + ... + 2279.

It is an arithmetic number, because the mean of its divisors is an integer number (327744).

2^1955649 is an apocalyptic number.

It is an amenable number.

1955649 is a deficient number, since it is larger than the sum of its proper divisors (666303).

1955649 is a wasteful number, since it uses less digits than its factorization.

1955649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607.

The product of its digits is 48600, while the sum is 39.

The square root of 1955649 is about 1398.4452080793. The cubic root of 1955649 is about 125.0538221554.

The spelling of 1955649 in words is "one million, nine hundred fifty-five thousand, six hundred forty-nine".